Both men and women can breast-feed. Normally, after childbirth, hormones start production of milk in women. However, unless men are given a shot to simulate this, that doesn't happen.... Unless a baby breastfeeds on a man's nipples. After about 2 weeks, the man's body will start to produce milk as well.
Aside size, there's functionally no difference between the two.
> The phenomenon of successful human male breastfeeding has been credibly observed in several cases.[6] However, the cases are not sufficiently documented to allow distinguishing of possible pathologic galactorrhea.
Where can I read more about this claim?
I don't think most of us care whether or not it is a "sexual organ;" that varies by person and their taste.
What matters is that it is easy, convenient, and accepted for women to breastfeed whenever and wherever they please. If you find the appearance of a breast in public arousing, that's fine too. Deal?