That's not logical reasoning, that's merely a fact derived inductively from everyday observations.
No, it's simply definition.
Again, the first law of thermodynamics is a "law" which describes everyday experiences within our own universe at the present epoch. But Big Bangs are not everyday in-universe events.
I've heard this one too, and if there ever was a weak objection to something, this is it. It amounts to: physics is worthless.
as there's plenty who will tell you the universe was belched out of the belly of a giant porpoise.
Your ignorance is showing and it's embarrassing. The mystical experience is remarkably consistent.