Are only ignorant people theists?
Well, a lot of people are raised thinking this way.
Writer Anne Lamott apparently grew up like this.
Without a creator, I think a lot of the why can start to fall apart though.
We can only be one of two things, if you want to know the truth.
None of the adults in our circle believed. Believing meant that you were stupid. Ignorant people believed, uncouth people believed, and we were heavily couth. My dad was a writer, and my parents were intellectuals who went to the Newport Jazz festival every year for their vacation and listened to Monk and Mozart and the Modern Jazz Quartet. Everyone read all the time.
-Anne Lamott, Traveling Mercies