Think about it
In Europe, you cannot buy a chainsaw before you are Permitted. It is a school for 5 days, extra day if you are going up in a tree. It started in Germany after a 21 year old carved up his free hand in a tree. After this school, the accident rate dropped from 700 or so a year to zero. Soooo, they have their proof!
The justification? National health care. If you screw up, and maim yourself, they have to pay to fix you, so you better damn well demonstrate you know what you are doing! (Its coming, Its coming!)
Doctors in Amerika make money off of the 30,000 or so that try to carve their initials in their legs and arms. Besides folks, lets not be hypocrits here. If we all believe in Evilution, then aren't we obligated to give stupid people the means to eliminate themselves from the gene pool? At least keep them to the shallow end?