Comment by insickness

Of course sex is a marketplace. There's a hierarchy with most attractive people at the top, least attractive people at the bottom. There's more agreement than disagreement about which people are "more attractive" and "less attractive"--but there is some disagreement. Maybe a woman I find very attractive, you don't find attractive at all (assuming you are attracted to women). Everyone is competing to find the most attractive/compatible mate. They bypass the less attractive/compatible and go after (or accept dates with) more attractive people. And due to the fact that more attractive people are a scarcer resource, there is a market competition. Yeah, you could say we live in a world where anyone has an equal shot at being with anyone, but we both know that's not true. Sex is a marketplace to some extent or another.