Well, it sounds like you went from being an atheist to an agnostic. That certainly is a more rational and less dogmatic position to take, based on what we know. As for the Hell thing, well, it's a possibility. Even Buddhism has hell realms.
Had something similar happen to me. I was a staunch atheist before psychedelics, now the notion of a purely material universe seems naive. Anyway, I wanted to share with you an excerpt from a blog post I'm working on. Might be a bit rough still.
> There's no easy path to enlightenment, but we do have some astounding tools and methods at our disposal. There is the humble magic mushroom, which, along with LSD and other psychedelics, breaks down the substrate of reality for a brief period of time. After witnessing the day-to-day patterns of conditioned behavior, and reality itself, melt away, it's a bit easier to disattach from falsehood. But it's also tempting to take the psychedelic experience for truth, when it itself is a distorted presentation of reality. I personally think that psychedelics increase communication between the rational mind and the rest of the brain, and that psychedelic visions are the rational mind's interpretations of subconscious activity. Mostly these are just wrong interpretations; the two sides of the mind don't communicate often and can't understand each other very well. We have to resist taking the experience at face value and dig deeper to find the kernels of truth.