What is the mental background of a man who decides to becomes a pimp?

No one can figure out another human being, but I would say low self respect for women in general (never respected his mother perhaps) and money! When people break the laws it's usually all about money. Some people steal, others become pimps, etc. Most of us can't figure out why a person would want to do this. My question is ... why do the protitutes allow it as they aren't likely protected that well out on those mean streets. Marcy