There have been some good responses…

I’ll add my poor one.

Adventurous people, wanting to be away from others would also weigh in.

As above no one moved to Norway from the Fertile Crescent.

People had to figure out clothing and fishing and hunting and farming then how all those things we different as they move further north. James Burke, in Connections points out how the plow changed. In light sandy soils a stick works, but in heavy wet clay you need heavy curved iron plows.

So. Why? Because Bob smells, and never cleans up. We’re outta here — but over 10000 years give or take.