In order to be a Trucker you
A. Have to have a DL
2. Pass a piss test. And then continue to do so.
That rules out 75% of your pool.
Hey Bandit! This is Little Beaver... Put your foot on the floor, we got your backdoor and I'm clear!
You have to have a CDL, which is a bit harder to get than a DL from what I hear.
Plus it's generally long-haul truckers that are in demand, for good reason. Very few people want to spend that amount of time on the road. It basically precludes having a family of any sort.
It's a tough job. Truckers are some of the most at risk for sleep apnea and heart related disorders.