I find it impossible to get a handle on what kind of person he his, or where his values lie, so that's kind of interesting.
I'm the opposite: at first I was willing to put up with the Intergalactic Man of Mystery, but the show seems to keep trying to shove some version of Character Development down our throats without ever illuminating what makes Rush the way he is. I've become too frustrated with him. I wish I could feel as you do!