CMV: most women aren't straight and arouse by female bodies.
Despite most women identified as straight, they technically not. Society believes that female sexuality, unlike male sexuality, is determined only by romantic attraction. That's why most women consider themselves straight, because they only experience romantic attraction to men but most of them experience sexual arousal from women's bodies often even more than from men's. I've seen so many women literally declare, "Women's bodies arouse me more than men's, but I'm straight" which is absolutely absurd in my opinion. The way "straight" women talk about other womens bodies clearly indicates the presence of sexual attraction and not just an aesthetic appealing because their wording often includes porn, erotica and other sexual content.
Also let's not forget the popularity of lesbian porn among women. You can make up as many excuses as you want, but there is no way you're straight if you aroused by watching two members of your gender have sex and you would never consider a man who masturbates to gay porn straight. Somehow, society uses logical conditions to define only male sexuality but women can say and do the gayest things and still legitimately claim to be straight.
I believe there are some percent of truly straight women but it's minority, like 20-30%. Most women are only straight-identified but technically bisexuals