A major problem which I think makes arguments a time-waster involves the confusion of opinion with fact. If (as has happened) someone tells me what God thinks, and I reply that this is only his opinion, but that I have a different opinion, and he tells me that I am not entitled to have that opinion because what God thinks is a “fact,” and I then reply that it is only his opinion that there is a God, that, assuming there is a God, that it is only his opinion that he has selected the right God, and that it is also his opinion that the God he favors in fact thinks what he asserts “God” thinks (assuming God’s opinion carries more weight than that of a given human), then we have no basis for argument, because we cannot even agree that we have different opinions.
I think I mentioned this several years back, but it’s worth a repeat: Religious true believers are almost entirely atheist, in that they believe in the existence of only one God – the God of their preferred religion. As far as all the rest of the Gods in which others have believed throughout history, they are atheists.
In other words, I’m not really that different from them. I disbelieve in the existence of all gods, while they disbelieve the existence of all other gods. You’d think that 99.999% similarity would be enough, wouldn’t you?