It is easy to show, following many different lines of argument, that atheism is psychotically-incoherent; and has led to mass personal misery and despair, and civilizational collapse.
But any amount of argument, evidence, experience (and sheer common sense) - is casually and effortlessly 'refuted' (to the satisfaction of atheism) by variations on the theme of:
Yeah yeah yeah - yadda, yadda, yadda...
But none of that heavy stuff matters, because at the moment I feel fine.
I am quite satisfied with myself as I am. (And insofar as I am not - I'm working on it.)
And anyway (unlike Christians and other religious) I can believe anything I feel like believing - even scraps and shavings of spiritual nonsense - so really there is No Problem.
It's all a pointless fuss made by simple-minded, dogmatic, crazed and/or retarded zealots; whose real purpose is to get inside my head; spoil my pleasures and sense of self-satisfaction; fill me with guilt about made-up problems (like sin); and thereby control and exploit me for their own purposes.
I know this because I was exactly like this for most of my adult life.
I also knew that my position was incoherent, weak, and amoral; and therefore opened me to exactly the kind of exploitation and manipulation of which I accused Christians.
But as adolescence shaped-into a kind-of adulthood, and proceeded through the years - I became more and more selfish and short-termist (to as great as a degree as I thought I could get-away-with), and I wanted to stay selfish; and I resented anybody trying to enlist me for any other project than my own self-satisfaction, here-and-now.
The problem (and what saved me, literally - from deliberately chosen damnation) was that my short-termist selfishness and self-indulgence as also opposed by some strong impulses or instincts (as I thought them) - that did not make sense in my plan to become ultimately smug: indestructibly self-satisfied.
I could not help but value love, honesty, beauty and several other things that made my life more difficult; albeit I kept working against these 'obstacles', and was able to become more self-gratifying (at least in my inmost, guarded thoughts).
From a Christian perspective, I had taken the side of the devil in the spiritual war; and was engaged in a long-term war of attrition against my own natural goodness - which was in me as a consequence of being part of God's creation.
And the devil's side was winning because my atheism meant that there was no compelling reason to resist the trend towards the implicit goal of Total Smugitude.
Eventually the increasingly official and cultural evil of Western Society - as well as personal events - made the stark choice clear.
Eventually, my own inmost attitudes - absorbed from the great and the good, from the self-styled and publicly-acclaimed socio-ethical experts of our time - began to sicken and disgust me, more-and-more sharply.
Eventually a commitment to self-gratification was instead leading towards a solid and corrosive conviction of existential hope-less-ness and despair.
Either I would have to hand-over my mind and motivations to The System; and try to enjoy being taken wherever that was trending; and to build and strengthen my smugness as having made such a wise and self-gratifying choice...
Or else I would need to become a Christian (of some kind).