57% of women are “generally happy” they participated in a one night stand? What a terrible percentage. That means 43% regret it. That should tell you a lot.
For me, as a demisexual, I can’t think of many things I’d like less than casual sex. I don’t intend to ever do it. It doesn’t turn me on at all.
Your friends sound like assholes for pressuring you into it and making you feel less than for not wanting it.