Why do so many atheists get so angry whenever someone so much as mentions the fact they believe in God?

LOL :D
LOL :D

And then rather than try to make a convincing case for why no one should believe in God (or gods) anymore, they erupt like a volcano with childish insults, and make false accusations (ex. "You worship an invisible sky-daddy"). When, or if, they eventually do get around trying to make a case for why they believe theists are wrong, their arguments are just so horribly lame and pathetic that one can only laugh at their shocking ignorance.

I don't believe in God. There, I said it. However, I don't rule out the possibility, and to be quite honest I think that every other explanation for why there is what there is just doesn't seem to work (ex. the multiverse idea).

Why do so many atheists get so angry whenever someone so much as mentions the fact they believe in God?
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