Because there is no evidence of the existence of gods.
Then you make your own elements by cooling down your own energy that you made of your own will and nothing else. After that, lets see you form life from non-life.
If there is no God (or gods as you put it) then there is no Truth, as God is Truth. If there is no Truth, then why are you even arguing that science is valid in the first place?
Again, who enforces the laws of physics?
The same thing applies to evolution. They're both just beliefs based on faith.
What would you accept as evidence?