I wonder sometimes how much of the problem with switching careers comes down to the usual scapegoat - lack of humility - and how much of it comes instead from infantilizing the students.
If we're going to keep moving the workforce around every 15 years then we need a way for someone^W most people to comfortably have 3-4 fairly distinct careers in their lifetime.
But you'll be putting in 50-60 hour weeks in the cold and heat. On the bright side, the work isn't as physically demanding as some other jobs.
I've pitched the idea to a bunch of friends who seem to have an aptitude. They'd all rather with as delivery boys, waiters, or whatever low end job. They don't want a "dirty job". They want to hold out for an easy money desk job. Screw working in the cold, I'll just stick with my $7.25/he job.