Personally, I think the strongest evidence for the existence of God is the fact that the vast majority of humans believe that a god of some sort exists.Okay, if you put it that way, I'll have to say that I don't find the kind of "evidence" for gods any more persuasive than the "spectral evidence" offered at the Salem Witchcraft trials.
I can see how one might think there's evidence for God is one is extremely undiscriminating about what one accepts as evidence.
Now, this is not enough to convince me, but just thought I'd throw it out there.