Back in the 70's I did just that! Quit the IBM shop I was running, and moved to Montana to drive a gasoline tanker. After a while I was designing systems in my head while I drove across the mostly empty countryside. Then one night while sliding down an icy hill at 2:00 AM, at 90 mph, in the fog, with a full load of regular gas I had flash of insight and decided to go back into programming. Driving a big rig only seems simpler and less stressful when your code is failing, or your success hinges on having to wade through somebody else's mistakes (rather than your own). If I make a mistake today I won't die or kill anybody else.