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Because having nipples doesn't keep men from reproducing. If women chose to reproduce with men who had none or fewer there'd be none.
Andrew M. Simons, a professor of biology at Carleton University in Ottawa, Ontario
http://www.scientificamerican.com/article.cfm?id=why-do-men-have-nipples
Andrew M. Simons, a professor of biology at Carleton University in Ottawa, Ontario
http://www.scientificamerican.com/article.cfm?id=why-do-men-have-nipples
source(s):
A book called "Why do Men have nipples?" by
A book called "Why do Men have nipples?" by
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