why do men have nipples?
928194
Because we thought we would look cool. Boy were we wrong...
558372
Nice decent women do not like for their nipples to show through except in the bedroom.\n\nIt is a natural effect caused by cool breeze, shirt rubbing against them, and from being horny.
645957
All human embryos in the womb look the same externally, until testosterone is either added or not.  If not, the baby will develop physically as a girl, if the testosterone is added, the baby develops physically as a boy.  This is true regardless of the XX or XY chromosome of the baby.  The nipples develop prior to the addition of the testosterone.\n\nThey are there because the child could have developed as a woman, and the only purpose that I can think of that they have for men is perhaps a little thrill when your lover pinches them. :)
495026
in some cases, men should wear bras.  I've seen some big men out there and they have bigger boobs than me and I'm a girl...it's sad..but true...did you know some men do wear bras? I know one and it's more like a bra to hold the fat in so it doesn't show as well as helping with medical reasons like back problems...
239458
Men are cut from the same mold as females.  Men HAVE nipples in order for women, who need them, get them.\n\nYeah, yeah, but that is all I got!
674385
They are called breasts.
91408
Mammillae are standard issue and develop before the sex chromosomes x and y kick in.\n\nAnd that's why men have nipples.
23354
To tell you the truth, nobody really knows. The best explanation I've been able to find (and frankly it doesn't explain very much) is that nipples aren't a sex-linked characteristic. In other words, nipples are just one of those sexually neutral pieces of equipment, like arms or brains, that humans get regardless of sex. \n\nAs you may know, every human being gets a unique set of 23 pairs of chromosomes at conception. These fall into two categories. One pair of chromosomes determines sex--the XX combination means you become female, the XY combination means you become male. \n\nThe other 22 pairs, the non-sex chromosomes (they're called autosomes), supply what we might call the standard equipment that all humans get. These 22 pairs constitute an all-purpose genetic blueprint that in effect is programmed for either maleness or femaleness by the sex chromosomes. The programming is done by the hormones secreted by the sex glands. \n\nFor example, the autosomes give you a voice box, while the sex hormones determine whether it's going to be a deep male voice or a high female voice. Similarly, the autosomes give you nipples, and the sex hormones determine whether said nipples are going to be functioning (in females) or not (in males).\n\nOne interesting consequence of the developmental set-up just described is that during the very early stages of fetal life, before the sex hormones have had a chance to do their stuff, all humans are basically bisexual. Among other things, you have two sets of primitive plumbing--one male, one female. Only one set develops into a mature urogenital system, but you retain traces of the other for the rest of your life.\n\nIt's tempting, therefore, to say that male nipples are yet another vestige of your carefree bisexual youth. Trouble is, male nipples are hardly vestigial. They're full-sized and fully equipped with blood vessels, nerves, and all the usual appurtenances of functioning organs. Why this should be so nobody knows--in some other mammals, such as rats and mice, male nipple development is completely suppressed by the male sex hormones. (Incidentally, don't start thinking that at one time our human male ancestors must have suckled their young. So far as anybody knows, male lactation has never developed in any mammalian species.)\n\nHuman nipples appear in the third or fourth week of development, well before the sex characteristics. (The sex hormones start to assert themselves at seven weeks.) As many as seven pairs of nipples are arranged along either side of a "milk line," a ridge of skin that runs from the upper chest to the navel. \n\nNormally only one pair amounts to anything, but on about one baby in a hundred you can detect some vestige of the other ones, usually on the order of a freckle. There are cases of women who ended up with an extra breast, which made them freak show candidates not so many years ago. Luckily today the women can avail themselves of corrective surgery while the rest of us can watch Jenny Jones.\n\nAnyway, both male and female babies are born with the main milk ducts intact--the gland that produces milk is there in the male, but it remains undeveloped unless stimulated by the female hormone, estrogen. Occasionally, a male baby is born with enough of his mother's estrogen in his body to produce a bizarre phenomenon known as "witches' milk," with the male glands, suitably stimulated, pumping away at the moment of birth. \n\nIn the adult male, the dormant glands can still be revived by a sufficient dose of estrogen. Actual lactation is rare--only a couple cases have been recorded. But at least one writer (Daly, 1978) has suggested that the "physiological impediments to the evolution of male lactation do not seem individually surmountable." Meaning we may yet see the dawn of the truly liberated household.
86011
Males also have the hormone estrogen. Estrogen menlarges breast size. Women have more of it, so they have bigger breasts. They also have luteniezing hormone which produces milk for mammary glans after giving birth. Men do not have that. Women displaying male qualities like beards have an excess of testoserone and androgen
1183966
For modesty, to keep men from being turned on all the time.  A lot of men stare at at a woman's breasts instead of looking at her face when talking to her.  Even if they don't keep staring, that is usually the first thing a man looks at when looking at a woman.  So we are doing the world a great favor by keeping our nipples covered!  Not much work would get done by men if they saw nipples everywhere!
47910
actually, I think men were given nipples, so they have something to play with in case they loose their balls
414466
ladies nipples getting hard is just the same as when a guy gets a boner. that happens when you're horny
962912
you should read the book why do men have nipples.  it askes a similar question and a doctor answers it.
266670
Because your nipples are the most sensitive part on your body. Just like girls. Also your head of you penis and a girl's clit area. Mainly whats there is nerves that a very sensitive, obviously. Don't worry about it. It's natural.
25734
Every egg starts developing in the womb as a female. The male genes kick in only later during the gestation. Consequently, an egg developing into a foetus develops nipples. After a certain stage, when the male genes kick in, the development of the breast is stopped. Thus men have nipple but don't have breast.
1036444
I think you're answering your own question.  You say that, according to creationism, women were created in man's image, which would mean that man existed before woman, which in turn would mean that Adam already had nipples and therefore Eve was created with nipples (in his image), but with breasts to feed her babies.\n\nSo, logically, men have nipples because they descend from Adam, who was created with nipples.
3475
Because in the womb, we develop equally until a certain point where our respective genders become more apparent. The period before this is when men grow nipples.\n\nBesides, can you imagine life without your nipples? A bleak world indeed.