Many take exception to the use of the word "God", but that is only a word.
I break it down into a discussion of ANYTHING supernatural; if you believe in anything supernatural, then the concept of "God" is not so far-fetched, nor is the concept of other "heavenly" beings.
Remember, just because you don't believe in it, doesn't mean (((they))) don't believe in it.
<not you personally, but YKWIM.