

I think it’s a bit of a stretch to say it’s all baseless. It could just as easily be the passing down of allegorical tales — stories seeded by some guiding or controlling force countless generations ago in our collective development. There are even arguments for things like a collective consciousness or sub-atomic networks, suggesting that our linear experience of time might just be a way of processing information.
Honestly, who really knows? But speaking as someone who has oscillated between Christianity, Buddhism, and atheism in my youth, I’ve come to see atheism as just as much of a limiting dogma as any other belief system.
I wouldn’t say I heap them in together. At times in my life I have rejected a belief in anything ‘higher’, which fits your definition of atheism, although perhaps my mindset was closer to an agnostic atheist stance, which to me is more along the lines of ‘I don’t believe, but I can’t be certain as there’s a limit to my knowledge’, as opposed to being a strong proponent of the belief that there is nothing beyond death.