I've had this thought years ago, but men can be unattractive by doing exactly nothing, but women need to deliberately do things to be unattractive.
For example, a man can be a virgin or not athletic, and he's deemed unattractive. Meanwhile for a woman to be a slut or be fat, she needs to go out of her way to make wrong decisions.
Also, women get very mad at this pic, so feel free to repost.