I'm a Christian, and go to church regularly .. well, as often as I can at the moment since our 13month old still has a mid-morning nap in his cot. My husband and I generally take it in turns!
I was raised in a Catholic family and went to Catholic schools (yes, with nuns). In that sort of environment, it's quite easy to just go through the motions and not think too much about what it all actually means. I don't think I really thought much about my faith and God until my Dad died when I was 15. Losing a parent at that age is like having the rug pulled from under your feet. Suddenly nothing seems secure or certain any more. It was a very rough time (Mum depressed, sister depressed, a few school friends avoiding me because they didn't know what to say) and alas there weren't counselors in schools then.
Anyhow, to cut a long story short, that was really the time when I started to cry out to God along the lines of 'If you're really there then this is when I need you most'. No flashing lights etc., but I did get a sense of peace and love and security when I was talking to God. I felt listened to and knew someone was there. Some might say that's just wishful thinking, but I really felt something tangible. I don't think wishful thinking can help much in that sort of situation.
When I got to university, then I started to explore what living as a Christian actually meant and how my faith should affect my life, because it didn't much until that point.
Some years on, I'm now married to a Christian and we are both active in our local church. Our faith is important to both of us, and does affect our daily lives (although I'm sure it should much more!).