Agreed. When I broke away from Christianity, part of me immediately gravitated to "So what DO I believe in?" After some thought, I realized that I don't have to believe in anything. Atheism is a descriptor for a baseline of being a living human being. I don't seek out to learn about other religions just as I don't seek out to learn about the Flying Spaghetti Monster or what claims people have made about purple elephants living on Pluto.
I'm content with studying the observable, testable world. If some phenomenon happens that makes me take a step back and question reality as I've known it, so be it. Even then, however, it has to cross a threshold from "I don't know why, but it's not significant enough to find out why" to "I don't know why, but I NEED to because it's happened too many times or it was too significant to ignore."
The latter is how I feel about Near Death Experiences. Too many people have experienced similar things and I want to know why and what's happening. Is it a phenomenon happening as the brain dies? Is there some other energy or supernatural phenomenon happening? I hope to explore these questions and more going forward.