Do we live in a simulation??

No, we don't live in a simulation. Every single one of us understands a common reality, but in varying intensities and styles, depending on the design of your brain.

Yes, you do.
You are actually an alien race who invaded earth. You studied humans at a trivial observation level then replaced them without understanding the why and reason behind their actions or thoughts but only understanding how to imitate.

To this effect, you are all the worst simulation of normal humanity.

correct. the fact that there are some unbreakable laws in life or nature prooves it.

I am in fact high right now.

Part of it does, but only the part that makes up my volume. The rest of the universe is much more simulation than I am, thus I live in the simulation more than it lives in me.

Thank you for sharing your perspective.
Do you happen to know "the rest of the universe"'s perspective?
Perhaps from it's perspective you are much more simulation than it is.
Thus...?

Maybe

Interesting. I hadn't thought of it that way. It would be like us, peering into the subatomic world and quantum world.

Your brain processes information to give you perception. You aren't percieving reality but realities energy. In that way you are in a stimulation. Now is everyone around you real? You wouldn't know. Any neurons that wires a sensory organ is perceived at the site of the receptor, similarly higher areas of the brain that govern behavior and thought can be activated by depolarizing neurons. So whose to say you aren't in some chair somewhere having your brain probed

Tldr yes but who cares

>Do we live in a simulation??

No, it's far worse than that.