5 Body Parts No One Really Needs Anymore
Male nipples have been a source of comedy and intrigue over the years as more and more people come to realize that they really don't serve any functional purpose.
Men have nipples simply because they could have been females in the early stages of development.
In the first two months in the womb, both men and women develop the same way. If a Y chromosome is present, the fetus will start producing testosterone, and subsequently male reproductive organs.
But nipples have been left in the male genome simply because having them isn't a bad thing or a good thing. They just are.