I've tackled this issue from a bunch of different angles, and have never come to any comfortable conclusion. But one can assume that, there is a semi-random distribution of these traits based on genes and inheritance. So these people are going to keep cropping up, and maybe even more of them. Given that there's no way to stop people with certain personality traits from being born, what to do with them? Unless we're making exceptions, these people also have human rights as well.