Atheism question I posted to the Quora site

I posted the following question to the Quora site so if you’d like to reply to it, or to just read the replies, or to reply to the replies, feel free:

Why do atheist missionaries on Quora troll theism question, reply with positive affirmation one-liners asserting the non-existence of God & run away (& when called on it to prove their positive affirmation, they just run away even faster)?