Board Thread:Questions and Answers/@comment-7823447-20141116031419/@comment-4651179-20141116041355

Why?

Tony Stark is a man of science, and considers humanity builds its own future.

Other type of media have adressed Stark's atheism more directly, but in the comics, is pretty much inferred apart from the quote I wrote up there. Plus, there's always that thing of "every scientist is atheist" media has.