If you were provided irrefutable proof that the universe as you’ve known, and your existence within it, is a simulation, what would you change about your life?

Nothing. Does being in simulation change anything about our existence?

I’m already Agnostic. Knowing we are in the simulation just resolves an issue there. The creator of the simulation is essentially a god.

Unless the simulation’s sole purpose is my individual mind, the knowledge of it does not change anything for me.