It's not mentioned here, but the argument that most gets me is the "why do you only care about women?" "What about racism or disabilism or homophobia etc."
When arguing this point recently I came up with what will now be my stock reply to this objection: "are there no women who suffer racism or disabilism? Are there no gay women in the world? Women make 51% of the world's population and are not a "minority interest".
Anyway derailing my own thread here so I'll shut up.