The path you are walking, the thoughts you've had because of it, is foreign territory to me. And so you must understand that when I describe "Christian morality" it is entirely only the part I can see, and which I remember being tought as a child in the Seventh-Day Adventist system. I cannot begin to represent your actual system of morality. So in this regard I do not quibble with your quibble. You are right by defintiion.

I consider the universe to be the physical one. Principles in "Plato's heaven" apply but are shortcuts to the actual physical reality. Temperature is a statistical shortcut to average particle velocity.

I have no answer to the question of where it came from, or why it is the way it is (why aren't electrons bigger? Why doesn't light move faster? Why is pi 3.14159265etc?). I don't know the answers to these questions, and I doubt I ever will.

Worse is the "hard question" of consciousness. That one seems like all explainations are utterly ruled out. No candidate answer could possibly be correct, except some form of nihilism. But nihilism is dysfunctional, so even if it is correct I don't want to live that way. But deep down I suspect all our systems of reasoning and logic are just approximations, and we are not capable of, not built to understand the deepest things. And solipsism doesn't seem statistically likely, for the same reasons superdeterminism doesn't seem likely.