[quote=@Normie]
Yes they will. Again, history proves this. Maybe you will have 1% of 1% who are weird and will live completely alone, or with only their immediate family, in some kind of remote and self-sufficient existence somewhere. The vast, overwhelming majority of people form into tribes, because you are safer and have access to more resources with dozens of other people watching your back than if you try to go it alone. Over time, some of these groups become more powerful than others, and when the opportunity presents itself, they take through force. The "government" that is formed does not necessarily start out as a classical social contract, in fact historically speaking, this type of voluntary agreement was exceedingly rare. Nearly all states that existed prior to the Industrial Revolution were autocracies put into place by whatever faction had the greatest capacity for force within a given region, specifically for the benefit of that faction. Their subjects had no say in the matter and if they protested they were punished or simply killed.
[/quote]

From a purely genetic point of view. 

A isolated group who remain so inbreeding becomes a issue. They weaken, they become less effective as time passes. 

A wider gene pool is stronger. They will outlast the isolationist who die and weaken as they inbreeding and genetic issues are passed down again and again.



This only kicks inn over long period but in the end. The tribes, the large group always wins.