Epstein is just the middle man; He didn't run the racket, in fact, you can say he is just a glorified (as in owning his own island) pimp who pimp out underage girl as far as what he did, if you want to talk about evilness in this, he is not even halfway to the full gauge.
As long as there is a vice and a demand for it, like drugs, there are always people willing to do it, regardless of punishment, I mean, if you ask 100 people that I will give you 1 million dollars and you find me some underage to you know what, you may say no, but you can't guarantee everybodies does, in that hundred. In fact, more likely, more than 1 person will say yes, which means you are probably going to be 100 or more Epsteins in the world.
Fighting crime is like that; it's never-ending. Most cop, like me, burn out doing this. Because we all know tomorrow is going to be the same shit, but with different people, you need a very strong resolve to be a cop, simply because of what you know.