I'll take a slightly different tack. I don't think there are probably any bad reasons for believing in a God/gods for the same reason you woudln't bother the Elvis accolyte. Since it can't be proven (yet) that God doesn't exist, afterall we are only human and not omniscient, there's nothing wrong with believing in something. I would agree, however, that unequivocally stating that God exists and you have proof, but you can't provide it for whatever reason, would give people fertile ground for calling you irrational. Also, I'm no more fond than you of theocracies.
Now, I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor, dumb bastard die for his country.---Patton
There is no room in this country for hyphenated Americanism.---Teddy Roosevelt
I never forget a face, but in your case I'll make an exception.---Groucho
And if you all get killed, I'll piss on your graves.---Shaman Urdnot
How would you like to own a little bit of my foot in your ass.---Red Foreman