You say you pity them. You say what they do is degrading and
morally wrong, hence, you detest them.
Have you ever consider that they might enjoy the job? Is there a
possibility that they are just as horny as most men? Afterall, if
they do not mind, it's easy money.
On the other hand, they might be doing it for the quick bucks, like
what was mentioned earlier. Or maybe forced. Who knows?
Whatever it is, one should not blame others for the bad things that
happen. It is up to you whether you want to visit a prostitute. If
you do, you take the risk. If you cannot afford to play this game,
then don't. Simple as that. When things turn ugly, no point blaming
them when the fault is yours.