I saw a movie once that as a man convinced me I am a Lesbian .
Sun 16 Aug, 2015 09:00 am
Depending on who you ask, and how honestly they answer, the reasoning is either "because we respect women and don't wish to touch them in the manner a husband might," (the bs version heh,) or if honest, "touching a menstruating women makes one unclean." And since the way one gets re-clean is a bit involved it's easier to just not touch any women.
But it's entirely religious, don't take it personally. It's not sexism in the secular sense.