Obviously simulation hypothesis. The vastness of space and the limit on the speed of light suggest multiple worlds are being simulated in the same "space" such that isolation between worlds is always maintained.

I kinda like the simulation hypothesis. We have 3 cases: either it is impossible to simulate the universe because of a natural law we haven't discovered yet; or it is possible but civilizations collapse before reaching that point; or it is possible and reachable, and in that case, we extremely likely to live in a simulation. 1 and 3 are the most likely imho.

To me, it's a 40% chance we do live in a simulation, but the way I weigh the different scenarios is extremely personal.