Can't really agree with you here.

Prostitutes don't devalue sex. They accept that it HAS value, offer it up for a value, and take pride in their work.

As for using beauty instead of brains... I challenge you to try and make money in an illegal industry and then tell me they don't have any smarts.

And as for people's worst qualities... I'd put murder, corruption, marginalization, and hypocrisy WAY above wanting to get your rocks off... but that's just me.