I just figured out that we as human species might be stuck in a pretty short and spectacular time loop. See, there is only ≈10 years left til the Technological Singularity. The nearest-future endeavors of humanity will be so advanced that we would either be able to travel back in space and time or completely restart our civilization simulation from the... ugh the exactly same times we are going through now. The same Singularity moment.
Simulating the prehistoric times in details when we were short lived tribalistic barbarians with no promise of technological salvation must be too cruel thing to do, so we (our post-human ascendants and descendants) decided (and will decide) to relaunch the most spectacular and humane moment of going through the Singularity.