For much of human history, moving house has been a death-defying ordeal. When pioneer Loren Hastings reached Portland, Oregon, in 1847, he looked back on the Oregon Trail and called it a "graveyard."
Today, you can pack up everything you own and move anywhere in the country without risking life and limb. Convenience has made nomads of us all, turning a tedious and life-threatening experience into one that requires minimal time and effort.