From a purely psychological and trying-not-to-sound-overly-judgy viewpoint I’d say that anybody looking to make a career for themselves in prostitution is not in a good place. I think whether it’s legal or not and regardless of the superficial intentions of all involved in the transaction there’s a lot of damage being done.
But then again, using another person’s body parts to ease tension and create pleasure for yourself is also an accurate description of having a massage.
What’s my point? Darned if I know, but I don’t think the average masseuse has as many potentially self destructive issues as the average “happy ending” masseuse.