When I was falling away from Christianity and believing in god, I initially thought to myself, "What do I replace this with? I need to find out what belief system/religion fits me best."
And then I realized I don't NEED any religion. We humans don't need to believe in anything.
Our baseline is the observable, testable world and universe around us. Nothing more. There is NO reason to think there is a supernatural realm just as much as there is no reason for us to believe that intelligent purple creatures made of titanium live on a planet 22 light years away. If, while living life and observing what is around us, we find evidence that leads to the possibility of something supernatural, then I'm all for further testing and examination of that.
Until then, just be and live the best you can and do the best you can for the most people possible until the time comes that your consciousness disappears and the organic matter in your body stops functioning.
Every group has lots of mediocre members who simply blend into the whole, and a few bright stars like yourself that shine. No member is useless, or a waste of space/time/resources, but a few are worth the extra effort to raise up higher. I love to learn, but I try to vary my field as much as possible, from science to ancient crafts, to religion, to fiction, to odd skills, even occasionally to languages, but I never get far in many. I get too bored with it. But I very much admire those who can take a more limited range of learning and thought and progress it much farther. Yes, Atheism is becoming trendy, but that's a good thing. It means it's spreading, and it means more of those special people will take it and make it soar.