You could make a case—anthropology observers have made this case, too—that women undergo a set of sufficiently, radically, psychophysiological transformations merely as a consequence of being feminine in nature, such that the additional rituals of transformation that might be necessary for men aren’t necessary. One of those might be menstruation, because that’s a pretty dramatic transformation. There has been some indication that circumcision is like the male equivalent of menstruation, because of the blood that’s involved and because of the locale. Of course, the same thing is the case with women when they give birth. That’s a particularly dramatic thing, as I just witnessed, because my daughter just had a baby this week. So thank God for that!