How to easily defeat any argument for God

[Belacqua]

There's no ad hominem in saying that the arguments made by theologians can be quite ridiculous. 

Thank you, this is what I've been saying. 

It's not ad hominem if you address the arguments. It is ad hominem if you say the argument is bad because the motivation of the speaker is bad.

Also, never said motivations are necessarily bad. Why must motivations be bad in order for strong biases to play a role?

True, everything we do is motivated in some way. 

And strong biases are everywhere in evidence.