Our "universe" simultaneously is and is not a simulation because reality is relative to the seer. It's a fun thing to think about but pointless due to our limited understanding on what would make one universe 'real' and another a 'simulation', since really they're one and the same, just at different scales. It is interesting to think about though whether or not our universe has a parent universe which it exists inside of. And if so how deep that nesting goes. If our universe isn't contained inside something else, does that mean our universe simply is everything? No way to really know.
Right. By whatever logic we deduce that our universe is simulated, it would be just as likely that our simulators are also simulated. And from there you get simulations on to infinity and a simulation becomes as real as reality gets.
i had an idea for a skit where, we exit the simulation and can "meet god", our simulation runners - and when I hear all about who they are and what they do, I'd ask them: "So, who created you?" and they'd all laugh and say "we don't know"
Sometimes I like to think that for some being, the earth is the size of a cell, and we humans are like bacteria trying to keep it alive and we are part of something insanely massive, at least massive to us.