But I didn't write the rules of the game.

Yes you did. You choose your desires. Evolution built you while optimizing inclusive genetic fitness, but it didn't build you in such a way that that's what you optimize. You are quite capable of caring for others.

Of course, if you're just concerned about the welfare of women in general, it's probably best to focus on donating to good charities, since as long as it's consensual sex isn't going to make a noticeable effect on the net good you do.