Starting over wouldn’t have any benefits unless humans would somehow have a completely changed consciousness. Otherwise the same egocentric views would dominate and competition would make sure that we get the same world again.

Humans are not capable of prioritizing “what do we as a species want to accomplish this year”. Should we look at world production and make sure nobody goes hungry, for example. Nope, can’t do it, because we have countries and money, making sure we can’t just cooperate and make it happen.