There's a very firm line in my mind between an actor and the roles they play. Same thing for the banker and what they do when they're not at work.
I watch movies based on entertainment or idea value. The personal lives of the actors have nothing to do with my enjoyment. On the other hand, my wife will not watch movies with certain actors because of gossip.
Along those same lines, I really enjoyed this
interview with Christian Bale. In it, he talks about the same line.