I'll second greatnan's post, lily, in praise of your discussions. It's good to have you around.
Re the rigour, as you call it, of religion. I think I have that without religion, it's just that I call it my moral guide. I have good human moral standards without religion, as do most non-religious people. And for me, the spiritual side of life is a kind of awe at the existence of the universe and life. I can't know, but I reckon that's probably very similar to what religious people feel, but without the embodiment, if you like, of actual spirits.
Cheers, lily, 