Sleepy... I don't believe in God either. At times though, I've found myself praying. Its something I've done since I was a small child, before falling asleep, and carried through most of my life.
At first I was mad, or "caught" myself... then felt stupid, because I don't believe a God is there to listen.
Then I figured, the odd times when I feel a "need" to pray, I may as well. It can't hurt. I don't offer it through anyone's name (Jesus) or direct it to anyone in particular (Jehovah), but I "pray" about my feelings, thoughts, etc. Its not often. I think its healthy, like a form of meditation, and emotionally it makes me feel better... even just to verbalize what I need to at the time. Its like "gathering my thoughts".
I don't believe they are heard, or I'm directed in my life, or my problems will be "helped". I do believe it relieves my stress, and since its so ingrained in me, I can keep and modify this form of "superstition" to fill my needs.