I remember feeling all right with myself until age 13. Then, I was getting off the bus one day and this guy called me Miss Piggy. That was the first time I ever really felt like I wasn't okay.
Psychology more than any other science has had its pseudo-scientific no less than its scientific period.
And I think all Nazis didn't see themselves as bad people. I've never met a racist yet who thought he was a racist. Or an anti-Semite who thought they were anti-Semitic.