Religion. I was born & raised a devout Baptist Christian (and creationist). But in the past 5 months, I've read about 50 books and hundreds of web pages and decided that agnostic atheism [1] and evolution make more sense. Hopefully I didn't just devolve this into a religion argument... [1] "Agnostic atheist" == I can't say for certain but I think God is very improbable, and I will live my life on the assumption he is…
As to whether this experience is caused by contact with god, or the sacred, or whatever, I'd put myself in your same "agnostic atheist" camp. Only I'd say that I'll approach some future experiences on the assumption that God is there. (Not that I'm going to go out and become super religious or anything, but being able to suspend disbelief once and a while is the key to making things fun, whether it's watching Star Wars or reading about Mysticism or whatever.)
That's the real take away I think, that in the same way most people don't like math because they were "mathematically abused" as kids, most people don't like religion because they were religiously abused as kids. When actually learning about religion is kinda fun and intellectually interesting.