Less than two steps between that and eugenics, and one step between eugenics and genocide. We’ve seen and documented that. It’s a logical but sociopathic mentality.
Conversely, when we realise that we’re stronger together and act empathetically as a society, every one of us and all of society benefits. When we care for the least of us, crime goes down and we find geniuses who improve life for us all, who would otherwise die in anonymous poverty.
Living like barbarous animals – not rising above the ‘brutality of nature’, as you said – helps sociopaths who take advantage of our better nature to enrich themselves. Indeed, if we structure our society around that, as we have done lately, our society will devolve around the lowest common denominator (people like Musk or Trump).