> 1) Who invented gravity?
If I asked the same question from any god, and in their divine wisdom they said "I dunno, man, was just this way when I got here, dammit", I'd be perfectly cool with that. I don't think gods should be taking credit for things they didn't do.
Did your god invent gravity, or just take credit for it? The theories of gravitation are not very well defined in the Bible, and scientists had to do most of the footwork.
Would you believe if some guy boomed at you from top of a cloud and said "heyest dude, I hast verily startedest this gravitation thing", without a shred of proof, would you believe it?
> 2) Do you really find it easier to believe we all came from 1 organism and just happened to mutant into the most incredibile life form on Earth?
That's the incredible part. Let's face it: Had it happened in a single poof, it would have been boring.
> 3) Why are life form not mutating stil?
But they are. It's just that the effects aren't particularly well visible in short time.
Go ask the guys who studied tens of thousands of generations of bacteria over decades. Actually visible results.