All you need to do is show me where science assumes that there is a God. I'm still waiting.
"Only if you suppose that God only acts upon the universe using supernatural causation and not ever any physical means."
No, not only. Show me any scientific physical means acting on the universe that is attributed to God.
"If God, for example, created Gravity; then a study of how Gravity results in the Earth being in orbit around the Sun is not presupposing that there is no God."
You always try to go here when you are losing badly. First you need to understand that the fact that bacteria have an adaptive mechanism does not mean that the mechanism 'evolved'. You also need to stop claiming that no creationist has ever answered that question for you.
"So how can a system for gaining knowledge be simultaneously “wonderful” and also “based upon the assumption that there is no God”?"
Why do you want to discuss subjective issues when you can't even get the logical ones right?
"It is “wonderful” to assume that there is no God in your deluded mind?"
The delusions are in your mind, not mine.
Now why is evolution such a good idea for a bacteria under stress? Your claim that it is part of the creationist model is absurd, and argument by assertion only.