I suppose I fall into the first category. My personal theory is that I have never encountered or heard of someone else encountering something that had a plausible scientific explanation behind it.

I suppose where I differ from people of faith is that when I experience something I'll reach for the scientific explanation first whereas the faithful will reach for the supernatural explanation. Some see Jesus in a cloud whereas I see a pattern my brain has decided to see as a face because the brain is a pattern matching machine. I'm not saying their explanation is wrong, because both are equally valid, and in alot of cases both hypotheses are equally unprovable.

The way I like to put it is that I have faith in science. But I am willing to have my faith challenged. And so far, nothing has changed that.