So what you're saying is that men are incapable and or inflexible about discerning the difference between building a relationship with a potential life partner and buying sex.

Quick Pro Tip. There are professionals who will trade sex for money without wasting your time on a date and a meal. Also, asking someone out to dinner without laying out terms that you expect sex in return is a scam. It makes you a con artist, not a guy who's just misunderstood. That kind of behavior in actual business deals is why we have lemon laws and the like. You're selling a date as one thing when really it's something else. Something rusty and broken that's liable to leave you in a lurch.