[AnonNo15]

I had thought about this idea and came to the conclusion that if the full universe simulation is ever possible, it is highly likely that we are living in one right now.

And the only way to prove it is possible, is to attempt to simulate one.

[baddox]

Your first sentence is precisely Bostrom's argument, which is pretty much the canonical argument for the simulation hypothesis.

[visarga]

And thus we open the door again for Intelligent Design. If we live in a simulation, then we could be the creation of an intelligent and powerful designer.

[AnonNo15]

The point about unfalsifiability is still valid. Even if we can simulate sentient life we still can't prove we ourselves are simulated or not.