Certainly there are risks, and no one could imagine the horror of a job-site accident involving one's son...but think about the nature of what else is out there. Your boy clerking at a convenience store and getting shot by an ice-freak, or driving a city bus and being jacked by a gangbanger. Trying to score a few extra bucks for school and being coerced into a smut film role, dealing a little smack on the side for pocket money. Working at an investment firm for a brokerage house. Being implicated in a rape at one of the Service academies, etc. etc.
There's pride in watching your son evolve into a dedicated worker, in a field that's honorable and a bit resistant to the pervasive greed woven into American business society. It's a dedicated service industry, not a manufacturing of junk-and-useless-trinket establishment. Certainly it's inherently dangerous but that's your job to make certain he learns all he can from someone who knows how suddenly things can go wrong. He'll get hurt most certainly, we all do to some degree but those accidents teach, textbooks can only hint of what could possible transpire. Experience. The best teacher.
Maas said "Having kids myself, I gotta think it's scary seeing him do this risky work. I hope my kids don't want to get into this stuff." I understand that - my son works with me. I deferred teaching him the 020T use for years - until necessity mandated it. He's the only one I trust using my climbing saw and that's not because of sand and grit ruining it - it's because he knows physics now and understands Murphy well - taught by experience, not a book or a classroom. WE got a foot in the door to their future, I'm not talking about funding four or more years of academic endeavors - we're greasing the skids for something they can eveolve into if they so choose. WE're luckey we have that opportunity I believe.
Reading all the posts and knowing tree people - in disagreement or not - we're a bunch that I feel our spawn is lucky to have an opportunity with. Gone are the days when we could inherit Dad's job at the big auto maker or farm in our Pa's footsteps...America has changed and certainly not for the better in many ways. Tree's are a very honorable profession and we should give chance for our own to step into it.
Be careful out there, and love what you do.