Everyone's "hell on saftey" because not doing that kills people...
When I was doing electrical work as a handyman I gained a healthy respect for getting zapped, decided the fewer times the better!!!!
Maybe yer heart trouble is from getting cooked one too many times eh? You're too young to be having that much trouble naturally man.
As far as the safety issues, yeah, it gets old sometimes, but ya gotta remember WHY people push it so hard. Next time ya fall out of a tree, or chainsaw your knuckles open, or get zapped.... ya gotta think "damn, I could've avoided this if I didnt tell all those safety-conscious people to go and
off!"
Just think of all the older people nagging you as people who're interested in seeing you grow old Newguy =)