That's not exactly true. There are a lot of them who only do it because the bar for entry is so low and the internet allows for safety, anonymity, and cognitive dissonance. They don't FEEL like they are whoring when they are doing it in front of a camera in their bedroom. I agree that once they debase themselves with this they are far more likely to move on to other types of whoring; but only fans had a lot of girls who would never have otherwise been whores.