Why couldn’t the earliest man live alone?

Since ancient times, people have shown their social qualities. He was looking for individuals similar to himself. Firstly, this is how the natural process of human reproduction was carried out. Secondly, in a group it was easier for people to arrange their life. They shared roles. One hunted, the other was engaged in gathering, the third supported the hearth. In the group it was easier to endure all the hardships of life, and natural disasters were not so acutely tolerated. Then the groups grew into tribal communities, and then transformed into a society that has come a long way of development.