honestly, why do males have nipples?!?

Answer 1

there is actually a book titled this which explains why, and if i remember correctly it's because we all start out as females in the womb. The book also answers many other questions similar to this one. Here's a link:

http://www.walmart.com/catalog/product.do?dest=9999999997&product_id=3390716&sourceid=1500000000000001827190

Answer 2

Cause they look funny without them!
No seriously, sorry you asked cause here comes a long, boring explanation:

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.

As 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.

The 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.

For 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).

One 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.

It'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.)

Human 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.

Anyway, 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.

In 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.

Answer 3

because EVERY human being starts out as a female when they are a fetus...as the genes change them to male most of the organs change but there are some that stay the same, and the nipples are one of them

Answer 4

All babies before they are born,when they are tiny, begin life as girls.As they grow ,what would be a vagina changes and
drops to form testes and what would be the uterine wall
turns inside out into a penis.The nipples are already there and stay put.

Answer 5

because everyone starts out as a female in the womb, during which time they turn into males or continue developing as females.

Answer 6

Because they are humans. Also, they wouldn't look so hot without a shirt on. Hah!

Answer 7

you started out as a girl, your mum has em... annnnd.. you'd just look awkward without them.. lol..

can you picture that?.. haha..

Answer 8

so they can breast feed the baby while the mother is at work.

Answer 9

so they have something else to pierce