A dispassionate review of results of the Holocaust may propose some benefits to the Jewish people (that survived). 

Foremost is that of 'culling' the herd. The biological weeding out the weak, left those with stronger fortitude as survivors from what had become a genetically strained European Jewish population. Survival of the fittest, produces enhanced genetics in the animal kingdom. Thousands of years of persecution of the Jews and resulting imposed and self-imposed insulation from broader societies, caused inbreeding and Euro-Jew-specific genetic diseases such as Tay-Sach's - which has now been positively bred out of Jewish existence. A wider more diverse gene-pool has done wonders, while our tormentors are breeding themselves into debilitating mediocrity.

A further benefit is the attaining of a Jewish homeland in ancestral and modern Israel - now offering the protection from the excesses of anti-semitic persecution never before allowed to the Jewish people.