If that definition completely and wholly describes atheism, than why would one bother to argue it?
It would appear, from some the the posts herein, that your posted definition is what is meant by most who argue for atheism. In the past, thinkers have described other ways: For example, St. Anselm’s epistemological proof of God’s existence was defined by Bergson so that the atheist had to conceive of God, but, had to conceive of Him without existence. Obviously, based upon the argument, one cannot do that.
after all, if someone claims that they were abducted by aliens, most people would consider them crazy, paranoid, or just plain delusional.
they would shake their head, grin and wonder if he is off his meds. but they surely wouldn’t stand there and argue with him
Hopefully.
so, i am asking
why bother to defend a disbelief in another’s delusions?
A couple of reasons: (1) I have discovered, after many, many years of living, that those who are unsure about their “beliefs” tend to argue the loudest. One could call this a certain lack of “faith” in one’s own rationale. Thus, the incessant search for rock-solid evidence (or rationale).
(2) A “painful” lack of faith, not only in their position, but also, a lack of faith in “faith”. Some people have such a predilection for “thought” that, if they can’t find the proof they need in the “logical”, or the “scientific”, then, either what they want proof for doesn’t exist (God) or they’re going to pursue it until they find it. Either way, it is anthropomorphism.
True “materialists” practice “atheism” as well, but, the practitioners don’t care to debate it.
Those of us with solid confidence in God, Jesus, the Church, morality (issuing from God), and faith, don’t bother to argue - unless, we are teachers and someone is in need of being taught.
JD