I'm not one so I can't speak from experience, but from what I've heard, heterosexual men are pretty interested in having sex with women. I even hear that its on their minds a lot.
Well, if that's the case, I'd suggest that one of the ways for them to achieve that goal is to fight for women's reproductive health. In other words, help women get access to birth control and be able to have sex knowing that we'll have choices about when to have a child.
Speaking on behalf of women, that sorta frees us up (whether married or single) to want to engage.
Just sayin...I've always wondered why this is typically cast as a "women's issue." I'd think the other half of the equation has just as much at stake.