This is pretty much my feelings on the matter. However, I have sometimes held out sexually with men I wanted to pursue for more than sex, because it's just the truth that many men do not seem willing to consider a woman for more than just sex if they get to hit early.
On the other hand, I sucked my husband off during our first date. I would have fucked him too, but he was overwhelmed.
It's not just men.
It's not a conscious decision or anything like that. I wouldn't disrespect a man because I had sex with him early on, but my heart just doesn't become engaged the way it does if I get to know him first before we have sex. The same emotions just don't develop with me.
I'm not talking about 27 months like Mlle. Rouge and her ex-boyfriend! I haven't gone more than 3 months without sex since I've turned 18, so I'm obviously not averse to casual sex at all and I'm obviously not talking about waiting for very long before having sex together, but I rarely seem to actually fall in love when the relationship just starts out being about sex. It just seems to be the nature of my heart.