I believe most PDs are moral more than mental illnesses, and that's why the current paradigm is so helpless to treat them.
I also suspect Zionism is the end result of a filtering process, and these psychopathic people are not exactly unique to Israel.
In my limited personal experience, I've never met an ex-Israeli I didn't like - they tend to be humble, hardworking and very secular. And very sure they're not going back.
I also haven't met anyone expressing interest in making Aliyah (or returning) who wasn't a narcissistic, criminally-inclined, hate-filled creep.
Repeat these population transfers for three generations and what do we get?
If the psychopaths weren't in Israel they'd be next door to us instead. Of course the Palestinians don't deserve to suffer them either, but we sure don't want them back...