I have a close friend that works for the Affleck family. According to her they are VERY normal people. No weird hollywood shit. No drugs. They are for the most part a very normal family. She says Jen gets out of shape and very mom-ish in between work, Ben drinks beer, watches sports, laughs at his farts, and really is good friends with Matt Damon... etc.
I have no hate for Ben personally as he is a good dude, but I just dont know about the batman thing.