The problem is that you picked the wrong target. The reason men don't get custody is patriarchy, not feminism. Sure, the reason women are no longer obliged to stay in relationships where they are raped, beaten or abused is feminism, but I won't apologise for that. The reason that women tend to get custody is patriarchy enforced gender roles, which you seem to think are the best thing ever. It's not the gender roles that you were looking for, since we have those in abundance in the west.
If I bang my head against a brick wall five times and get five lumps, why am I surprised when I bang it a sixth time and get a sixth lump?
"Isn't it funny that the only time your race or gender is questioned is when you're not a white man?" - Wanda Sykes