Well, me too, I am just saying that the Universe came from a Cause. I have never heard of an uncaused effect, or that anything with a beginning was without a cause. Have you?
Quantum mechanics... effect sometimes happens before or without a cause.
You say you don't believe in anything that has no scientific evidence to back it up. I would respond that you are deluding yourself-- because whether you realize it or not-- you believe in things that science cannot prove.
Not sure where you're going with this, but scientific evidence and scientific proof are quite different things. I might believe something that has not yet been proven (in as much as science proves anything).