I get the impression you think that atheism is something you opt into. Perhaps it is for some people but for others it is the realisation that there are no supernatural beings, no after life - just the fact the evidence does not support the idea of God/gods. Not perhaps the most cheerful realisation but who says everything has to be cheerful.
So try to remember that atheism is the absence of belief not an alternative belief system.
Atheism is a belief system.
The issue....how did it all come about?
1) A supernatural or supernaturals or
2) Without the aid of any life force.....a product of natural laws
There is no proof for either 1 or 2. Therefore the choice of 1 or 2 is a belief based on what the person feels is some evidence.