Early humans lived in groups
Answers
yes, early people live in groups
Apes are social creatures, the group brings protection, warmth, and the ability to gather large amounts of varied foods. In that sense people of any period are no different to other colonies of Ape species.
What does set Sapiens apart us that groups of people even from early times show extreme nomadism and have a particular behaviour in which smaller tribes come together in a gathering of all groups in a geographic area. The festival a time of trade in objects, knowledge, stories and most importantly genetics. Mothers and grandmothers come together to see themselves in and assist with new generations. Marriages are made. Youths become initiated men. Each smaller group travelling long distances to come together in such gatherings. I know of no other ape species which does this to such an extent.
So early man came together in family groups for protection, learning and food gathering. The same as Apes do but we expanded by coming together in the rituals of festival.
It still happens, religious pilgrimage, rock concerts, lifestyle confests like Burning Man down to simple family gatherings, the Sunday lunch at one end, marriage and christenings at the other.In groups, human survive. Group gives an opportunity to talk, spend time, ask recommendations, resolve issues collectively, face danger and fight it in unity, sharing and caring for those who helped, and a lot more. Building residential colonies and farming needs a group of people. So, there are more reasons than one to answer why early man chose living in groups