Hitler, Einstein and monogamy

Let's say Einstein was the greatest person of the 20th century and Hitler was the worst -- at least in terms of what they did for mankind.
Now let's look at the way they treated women. Hitler, not surprisingly, could be dick-tatorial toward Eva Braun but he was faithful to her and toward the end of his life started to appreciate her for her devotion to him and doing her main job (getting him to relax a bit), according to a recent biography of her.
Hitler could be a thorough bad guy even in the personal arena -- he had somebody murdered for talking too much about his apparent affair with his own niece Geli, who committed suicide in the '20s, probably because she realized she was losing Uncle Adolf to Eva. (Interestingly, the guy who carried out the murder was Hitler's former chauffeur, who'd had an affair with Geli too that Hitler knew about but didn't stop.)
But Hitler also had middle-class values, and he wasn't highly sexed. It added up in the end with Eva getting 36 hours as the one and only Frau Hitler before being quite satisfied to end her life in an operatic flourish, standing by her man.
Einstein didn't have middle-class values, having been described as an "unkempt philanderer." He left his first wife Mileva for his cousin Elsa, ruining his relationship with his two sons, and went sneaking around on Elsa too, with several women.
What can we conclude? Monogamy in men is not necessarily a test of moral character. It has more to do with cultural morays and the strength of sex drive.