Dear Nissa, it was also a very big part of your religion that men are superior to women and that a women's place is in the house, not in the office.
That's changed. Christianity survived, perhaps even became a better religion.
Just because something's worked for a thousand years doesn't mean that it is somehow sacred and unchangable. Most of it is tradition.
Go ahead and quote me the bible passage where Jesus tells priests that they must remain celibate (if such a passage exists), because otherwise your argument is "It's been done this way before, so it should be still."