Yes, it is what man must do to survive.
Do you understand the word universe?
Yes, it is all of physical existence, although I do not regard it as all of existence. (Life, consciousness, and volition exist. They exist "materially," that is, independently of any particular individual's consciousness or knowledge of them, inlike concepts, or other elements of concsciousness itself, such as emotions, which only exist if there is some one to have those concepts or conscious experiences.)
The only created things are those created by man. Everything else exists without contingency of any kind.
Hank
Is it fair then to conclude that you don't believe in God, understood as the one who created the universe?
I'm not sure what you mean here. Are you saying that the universe is deterministic? Or do you mean determined plus some element of randomness? Or something else entirely?