If college costs $50K a year, the college-bound will cost $200K in four years (and it often takes longer). Meanwhile, the truckers will be earning, say $50K a year. At the end of four years, your trucker kids will be $400K ahead. And at the end of four years, most college kids will either be (a) going into occupations with mediocre pay, like teaching; (b) going to graduate school; or (c) going into rehab.
Can you really earn $50K a year right out of trucking school?
The comments point out that Gumpy Old Man used a best case scenario for the salary of a trucking job and a worst case scenario for the cost of a college education.
But a teaching salary is typical of the type of starting pay a college graduate might get. His point, that you have to pay a lot of money to get a college degree which doesn't lead to a starting salary any greater than you would make driving a truck, is a valid one.
The UNLV guy makes a valid point that the trucker lifestyle may be so bad that it's not worth the extra money. On the other hand, some truckers may be glad they don't have to have a boss looking over their shoulder all day micromanaging their job, and glad they don't have to deal with other annoyances of yuppie jobs like commuting and wearing uncomfortable shoes.