this is very naively reductive. it's been shown time and time again throughout human history that being an asshole/ruthless/competitive leads to better outcomes for you and the people around you that you care about.

humans are not bonobos. sitting around being nice to each other is not what got us to be the apex species on the planet. people break rules (social norms or legal laws) to get ahead, it is happening continually around you and can't just wish it out of existence.

Some people seem to think that because they don't want to be assholes that assholes have no reproductive usefulness, and I'm not sure that's valuable.