One of the departments physics profs says we live in a simulation.
Maybe. Particles are literally made of nothing.
You have free choice, to decide between good and evil.
If you repent of your sins and regret ever committing your mortal sins, your sins are removed and you go to heaven.
If you don't, you go to hell with all the other unrepentant sinners, never to know God. Mind you, Hell is full of Freemasons, Jews and Baptists, so you're gonna be miserable.
Or, more likely, if you have an immortal soul, your chaff (sins) are removed and burned and your good parts sent to heaven.
There won't be much of you if you sin
I don't know. I've never been dead.