Some people might do or were something that I won't like. I have learned to not let that influence me in way, and be comfortably ambivalent.
I especially felt bad after I came to know that Richard Feynman slept with many of his friends' wives and tried to sleep with even more of them. He burnt a lot of bridges this way. One Physicist had told me that Feynman hit on his wife twice, and when discouraged by the wife, he let it go as a perfect gentleman.
Despite this, Feynman remains one of my most revered icons and his picture still hangs on my wall.
I don't overlook what he did or try to find some naive justification. I know he was this way and that does not make his mind less fascinating to me.