I'm probably not the right person to comment - I'm a very black-and-white "there is no God, the universe can be explained scientifically type", but I can identify with that "not getting it" feeling.
Like most people in this country I grew up surrounded by religion, both Catholic & CofE and I just never managed to buy into any of it, even when I was very young. When I got to my late teens and a few of my friends were practising Christians I remember a strong sense of "What am I missing here?" Why do these intelligent, rational people believe something so strongly that makes absolutely no sense to me.
It wasn't until I started reading up about things that I thought that, actually, I hadn't missed anything - they had. Strong beliefs really don't make sense - they are contradictory, ask more questions than they answer and don't fit with the reality of the universe we exist in.
I think the only responsibility we have to ourselves is to keep thinking, keep reading, keep learning until we find something that makes sense to us personally, never mind what anyone else thinks.
There's no right or wrong when you come right down to it, since none of us actually knows the answers - so you're not "making it up as you go along" any more than anyone else is. You're just expressing freedom of thought which is not possible when you're tied in with strong evangelical beliefs.
Congratulations on "waking up" It's a good thing, truly :)