It all depends on what you like and what your priorities are. The items that Sac listed in the OP are mostly chemical dopamine producers, so while they make you feel good, it's something that I've always viewed as a "false high" since it's not from actually doing something (womanizing/manizing perhaps being the exception there).
When it comes to inherently dangerous activities, you only get one turn in life, best make it a good one. I've seen a lot of people who've led very boring, perfectly preserved lives, and have little to show for it at the end as far as memorable experiences go.
Taking appropriate precautions is logical. I enjoy riding motorcycles, I always wear a helmet and some sort of protective jacket and gloves. I don't ride around here at night due to deer. I generally avoid bad weather days too. Obviously I enjoy fast cars and flying, but don't go out trying to do things that will likely get me killed. And since shutting down Cloud Nine I've effectively stopped flying. So wrenching, motorcycling, fast cars, dangerous tractors, I suppose those are all vices and as long as I enjoy them, don't see a reason to give them up. Yes, they might kill me, but people die driving their Volvos, too. And after watching a number of people go through the slow and agonizing death of old age, no thanks.
The drinking/smoking one, I enjoyed good beer, wine, and liquor, most of all enjoying the good flavor pairings with food. But stopped drinking earlier this year along with some other life changes as I was noticing my body wasn't happy about some things. I miss the flavor pairings, but otherwise don't miss it.