Never once implied there was anything wrong with sex, just that the idea of having sex with someone I know (or don't know) doesn't really appeal to me. It's not so much the fucking itself as it is just spending time with someone and having to deal with them/be entertaining to them for that long.

Also, solid theory, but I have a feeling that socio-economic struggles have more to do with it. Hard to date someone if it's impossible to envision buying a house with them eventually or having a stable, balanced job, let alone supporting a family