Big Thoughts About Little Drawings: Real Prehistory

I spend a fair amount of time considering whether people in times past had a lot of the same mundane, humdrum issues that we have today.
For example, you can't tell me that prehistoric people didn't occasionally get on each other's nerves.
Let's face it, major decisions get made these days based on this problem -- getting rid of a roommate, finding another job, and yes, maybe moving to another continent.
We marvel at how ancient civilizations traveled across oceans, over mountains, into the unknown -- but you know, maybe they just needed to get away from somebody who beat them up or talked too loud or stole their girlfriend.