I was a loner as a child and happiest at home, launching toy rockets and aeroplanes. When I started causing trouble in my third year at grammar school, Mum was really surprised. My parents sent me to a child psychologist, who suggested I might have Asperger's syndrome.
If you feel the purpose of life is struggle, Darwinian fitness, dog eat dog, then you will be eaten by a dog, or you will eat dog. You become what you focus on.