It's OK to have individual human failings. Beethoven never emptied his potty, even when guests arrived, and Mozart was obsessed with smutty jokes about poo and bottoms. Sibelius gave up composing and lived on champagne and lobsters for decades. Picasso was an inveterate womaniser and Schubert probably died of syphilis contracted from one of the many prostitutes he used. It isn't OK to have a fascistic ego bigger than my arse and preach that Jews were poor composers because they are an inferior race, or cheerfully promote the Nazi party during the war in your concerts. Such individuals suffer from far more than common human flaws. I don't see how they can create beautiful, life-affirming art when they're like that.