I was just surfing through youtube and I ran across a series of videos. The first is entitled "The Story of God (Part 1 of 18) and there are 17 more parts. They were produced by the BBC and they are narrated by a very distinguished looking, Jewish gentleman named Robert Winston.
I watched the first video and then I clicked on #16 because the preview picture showed Richard Dawkins.
Part of the video is a discussion between Dawkins and Winston. Dawkins says that Winston is a very intelligent person and a very religious person, Then at 3:24 minutes Dawkins looks him right in the eyes and says "My suspicion is that an awful lot of intelligent, religious people are in it because of a deep reverence for cultural tradition. I actually doubt whether you seriously believe in a supernatural creator."
Winston gets a very embarrassed look on his face like a little boy who has been caught with his hand in the cookie jar. He turns away from the camera for a few seconds and when he looks back, he starts talking about the co-existence of science and religion.
He never replies to Dawkin's statement.
I would bet that most theists would react EXACTLY THE SAME WAY.