My brother was a self-employed tile guy in Spring Grove, Illinois. He made good money, and he has some nice toys, but at only 64 years of age his body is a mess. When he was about 50 he tore the rotator cuff in one shoulder, and then he tore the other a few years later. He’s had multiple surgeries on both shoulders over the years, but the end result is that now he can barely lift a gallon of milk with one hand/arm.
(This is the same brother who was recently diagnosed with Parkinson’s.)
So-called “blue collar” workers are DESPERATELY needed in this country, and the pay can be pretty good because of this, so if your son is so inclined, please try to steer him away from the body-breaking professions.