Quote:1. Whatever begins to exist has a cause of its existence.
Causality is a proposition, not a fact.
Quote:2) There must be a beginning of everything that exists because there can't be an actual infinite number of past events (no infinite regress)
Another proposition stated as fact.
Logic suggests but does not guarantee truth.
I know nothing of quantum physics.My lack of belief is connected directly to lack of proof. I'm perfectly willing to change my position immediately I see some proof. Since no one has managed this in recorded history, I'm not holding my breath.
Apologist sophistry won't do it.