For me it’s driving while under the influence. If you couldn’t tell, I like me some ganja. However I have long since held the belief that it is utterly insane to drive while under the influence of most substances, with maybe nicotine and caffeine being the exception. All too often I see other stoners smoking and driving, which I simply can’t fathom. I’ve only operated a vehicle once under the influence and it was just to move a U-Haul around the block to a different parking spot, which was such a scary experience while high that I refuse to even consider getting behind the wheel again while high.
The “macho” attitude to safety. From soldering to woodworking. In soldering, there are fumes created when burning a substance called flux. There are commercial fumes extractors to purify and remove these fumes, but many refuse to use them, even if they’re cheap. Saying stuff like "What’s a little tree sap gonna do to me?. Chances are, none of them could run a mile due to the irritation of their lungs.
Another one is woodworking, especially around power tools. Table saws can shred your fingers before you can blink. It can pull extremities towards itself, and can launch wood fast enough to perforate organs. Yet there are still people who insist “I don’t need no push stick”, “don’t bother with a crosscut sled, just free hand it”.
Motorcycle riders not wearing a helmet be like