Another fundamental human need is safety/immunity. Immunity is constructed from "im+me+unity". "me" means any individual in the society, and the prefix "im" makes it negative. This means we can't expect to be safe and feel peace of mind if we are lonely. The need for safety and peace of mind is satisfied in part by belonging to a larger society. Which, evolutionarily makes sense.
We buy new clothes and try to keep fashionable to be seen as beautiful and neat in society. We share our funny, cooking, dancing, celebrating videos on the internet, write books and share our experience for others’ consumption. Loneliness is linked to poor mental health.
Even the dictators become dictators because they have compared themselves to others and found themselves superior to them. So! Even extremists such as dictators need to belong in a society!