Disclosure: I am a Christian who has daily questioned my belief but hold to the commitment I made 30+ years ago. Sometimes I feel good about it, other times I have doubts, but that makes no difference with respect to the commitment I know I made. When I think about atheism though I wonder about the following things. If anyone has good answers it would be helpful at least to me.
1. Where do we come from? As I understand it we evolved. And where did those things come from, as I understand it they spontaneously appeared from a "primordial soup", which existed as a result of "the big bang" which so far as I know there is no explanation for ... just that it must have happened.
2. What are we made of? That would apparently be molecules, which are made of atoms which are made of subatomic particles, of which we can only see evidence of a few given great effort and what we can see seems completely inexplicable. Matter is almost completely empty space, protons should repel each other in a nucleus but are somehow held to together by a "strong force" ... what is that? What is light? What causes gravity, or magnetism? How can we scientifically "know" something when it is built upon complete mystery?
3. What are we for? In most cases those who look for the greatest hope available and strive for it against all odds instead of just giving up are admired. Except in the case of faith they are ridiculed. It seems the atheists are those that when faced with a difficult challenge with small odds of success merely lie down and claim it is hopeless. There is no purpose, there is no future, everything is meaningless. Not only that, but they think that by discounting all except that for which they have direct proof and giving up to the perceived inevitable, that they somehow attain intellectual superiority.
It seems obvious to me that with the 3lbs or so of neurons and fat in our head, and our brief stint on this small earth and limited capacity to perceive, comprehend or remember it that we must either admit to a degree of faith or be logically delusional. Not finding sufficient proof, or having the capacity to comprehend the proof I have for a belief for or against God I instead choose to pursue the goal that offers the greatest hope. Evidence will not be found in carefully constructed arguments, but by looking for those things that make people into better people. Kinder, more generous, more loving, more forgiving, more hopeful. I am aware that many Christians have failed in this regard and I regret that, but I pay more attention to the many that have succeeded.