lol, the point of the question is that most dudes wouldn't be with a prostitute. and the dudes that would are either guys she wouldn't want because they're trying to save her or pimps. Most of them choose the pimp. You keep saying they don't need a pimp yet they keep choosing a pimp. the pimp is providing something they want or else they wouldn't be with him. so yes, some of them do "need" a pimp. you're saying "they could go through an agency, they could hire muscle, they could..."
if they could do all that why haven't they done it. some of them have and more power to them. but assuming all of them could do it and shouldn't be with a pimp is very pretentious. like i said, not everyone needs a pimp but whatever you choose in life you need (even if it's just a phase, it simply means you needed it for that phase).