So it is not possible to define what god is because there is no evidence at all to base that definition on. This is why it is impossible for me to believe in a god. People can tell me what ever they like about their god but without evidence, I only have one option which is to not believe in the existence of a god.
You also mentioned that atheists make the same mistake as religious people make. That doesn't make sense. You atribute a lot more properties to atheism then it actually has. The only property you can atribute to atheism is the lack of a belief in god.... Done. Nothing more than that. You can't be wrong about not believing in something because there is no evidence to support that belief. Science does not in anyway "proof" anything related to the existence of god. It doesn't proof that god doesn't exist (Proving that something that doesn't exist, doesn't exist, is impossible), it just says: We have no evidence for the existence of a god. Science also says: If you do have proof, please share it with us. And no, eyewhitness reports do not count as evidence. And yes, proof needs to be verifiabile and with that, repetitive.
Atheists don't have the goal to remove religion. Sure, some atheists do believe that's better, but in general, atheists just don't believe in God. Besides that they just live their lives. In my opinion, removing religion isn't going to solve any problem. It just forces people to fight with eachother based on a different context. Religious wars don't really exist. Religion is used as an excuse a lot for conflicts, but there are underlying reasons for these conflicts that are more fundamental. (like inequality and greed.) These are human properties, not religious properties.
What you said about hell not being talked about as much in churches. That's why I said "direct / indirect". The indirect references to your doom are much more abundant. They always talk about the heathens. In church, the heathens are an unhappy bunch. And they don't mean people that do not believe. They mean people that believe something else. I guess atheism wasn't even considered an option in the times the bible was written.