These questions sound very rational until you realize that sugar, performance cars, military technology and history lessons can tick all those boxes.
Ok, so add "is it easy / quick / cheap to acquire?". Performance cars (I take measured risks at the race track) and track days / race tires aren't cheap. Not in any sense of the word.
Unsafe driving in ANY car? Yes - but that's already illegal.
Not sure if the history lessons are a joke, but sugar is rightfully taxed or otherwise disincentivized in many countries, because it is highly harmful to society as a whole. Sports cars definitely get some yes answers, and are also rightfully taxed in several countries.
Military technology may be an exception as "necessary evil", but also is a bad example because it id not consumer-oriented.
Can you recommend a history lesson that will destroy my life in seconds? Book, podcast, youtube would all be acceptable formats.