There is a large segment of our population who don't want to think of criminals as normal people with problems. They would much rather think of them as lacking morality or simply as evil because it is a way to elevate themselves to a higher plane of humanity. Its so evident whenever you bring about the any thread regarding the punishment of criminals whether it be this, capital punishment, or prison reform.
As far as I know there is no scientific proof for a case to be made on that front. While I've never been one to delve too deeply into human behavioral studies nothing that I've ever read points in that direction so if implacable has anything in that regard I'm open to it but I'm not going to hold my breath.