I always work assuming the singularity has already happened so I aim to impress SIs.
Also feel from intelligence derives an unmatched emotional maturity which we humans have not achieved yet as we are unable to live in harmony with nature and each other. (Hence no contact yet)
Yes, this is the fundamental premise of the simulation hypothesis.
If you read Bostrom's original paper it goes over this.
1) What benefit does simulation have for the SI?
--- 2) > There are trillions of worlds out there existing for billions of years (and that's just what we know of).
You start with the assumption that those worlds exist according to our knowledge, but if your conclusion (that we're in a simulation) is true, then those worlds could also be fictitious. You see the loop in your reasoning?
3) It's not improbable that we live in a simulation, but that doesn't really make any difference for us. There's no "breaking" out of the simulation for us, and there's no deeper meaning to life as we know it.