>Like I mean who in their right mind would have left the basic oasis of Africa to go freeze their ass off and struggle just to live in the inhospitable areas up north?
I don't know that this is the correct characterization of how out-of-Africa migrations progressed. Youth (and people with the influence to shield themselves from danger) are expeditious, families and societies head where living looks to be easier and away from where living looks to be hard, whatever the pressure may be.
I read a description of this somewhere. Just moving a few km per generation, while being able to maintain direct links to your previous home, would push humans to the extents of the globe over tens of thousands of years.
I don't know that this is the correct characterization of how out-of-Africa migrations progressed. Youth (and people with the influence to shield themselves from danger) are expeditious, families and societies head where living looks to be easier and away from where living looks to be hard, whatever the pressure may be.