Fitness and Eugenics of Insufferability

I really like this one.

Ashkenazi are selected for being obnoxious, because that induces persecution, which in turn induces high IQ. Their genes are tuned to ensure they are never left alone, by not leaving you alone: they are indeed antagonizing you on purpose.

For the Jews, hard times is every times, because nobody likes them, not even other Jews. Thus, they never become soft. 

The downside is that they never enjoy good times, due to doing it unconsciously instead of consciously. There will never be a Jewish golden age. All that effort, and no subjective payoff. They suffer so that they may multiply and suffer more elaborately.