100s of proofs that God exists.
(Caution may contain irony).
I think my personal favourites are:
ARGUMENT FROM RESPECT
(1) You have to respect my right to believe that God exists.
(2) You also have to respect my right to believe that I don't have to respect your right to believe that God doesn't exist.
(3) Therefore, God exists.
ARGUMENT FROM SALEM WITCH TRIALS
1 The bible says "Thou shalt not suffer a witch to live".
2 So we killed them.
3 Therefore god exists.
ARGUMENT FROM YOUTH GROUP MINISTER
(1) God is awesome!
(2) Like, totally, dude!
(3) Therefore, God, like, exists and stuff.
ARGUMENT FROM NAZIISM (INVERSE-GODWIN)
(1) Hitler didn't establish a Christian theocracy.
(2) Therefore, Hitler was an Atheist.
(3) Hitler was the worst leader possible.
(4) Therefore, all Atheists are bad people.
(5) Therefore, God exists
The most powerful weapon against errors of any kind is reason.