“Energy cannot be created nor destroyed”.
I’ll accept that as a first principle (although as written it doesn’t support the existence of a God who created everything.)
Based on that first principle, you ask “If this is so, then wouldn’t it mean that energy is infinite?” but why would it? Why would the fact that energy can’t be created or destroyed mean that energy is infinite?
Based on the assumption that energy is infinite, you ask “...wouldn’t this be proof of God?” but again, why would it? Why would energy being infinite be proof of God?
Based on the assumption that energy is infinite, you also ask “...wouldn’t it mean that there is no such thing as death or “real death”?” But this time you give a reason: “Because if this energy is infinite, then eventually it will form into you again?”
But why and who says, besides you, that because this energy is infinite that it would eventually form into you again.
I’d say that if the energy is infinite, there are infinite possibilities for the something into which it will eventually form and there is no reason that something would necessarily or even likely be “you” or anything it had formed into before.
Because just read that sentence again: “Energy cannot be created nor destroyed”...That means “Energy is infinite” What else could it mean? It means it has no beginning nor end, it is infinite. And if it is infinite, then time has no bearing on what happens to it. Time is out of the equation. Whether it’s a billion years from now, a trillion, 50 google years from now, eventually it will form into mass, atoms, molecules that form exactly into the same cells, neurons, memories that make you what you are right now. What I am saying, is that if energy is infinite then this is proof of God. It does not mean that God is an old man in the sky programming the universe like a computer programmer, but an infinite being that is energy where time has no bearing but does in fact exist. Everything that exists is God. I always use to laugh when Davey use to say on that show “Davey and Goliath” “God is everywhere”..He was so right.