When and why did the 20th century bad boy aesthetic (with motorcycles, etc) stop being cool?

[WindowPhil]

Youth in the 20th century loved their things like long hair, cigarettes, motorcycles, and rock music.

But in the 21st century, the youth are outside of that 20th century continuum that unified someone coming of age in the 1950s with someone coming of age in the 1980s.

Young people don't care much about having a "cool car" anymore, large shares of them aren't clamoring to own a motorcycle, they see hip hop as the cool genre instead of rock, cigarettes aren't in vogue with them and the minorities of them that do smoke tend to vape, etc.

What happened?

[Ferguson97]

Same reason in the 60s the youth didn't think it was cool to do stuff that was popular among youth in the 1900s.

[Crane]

Motorcycles are cool, but motorcycle culture is not.

[Pedocon Theory is not a theory]

Why stop there? These damn youths, they don't appreciate zoot suits and the Charleston any more. What happened to jazz?? And don't get me started on drinking, what with all these newfangled "cock-tails" corrupting impressionable young adults! Next you're going to tell me we need to bring these horrible "electric" devices into our homes, no sirree! Give me my Model T, my gramophone, and my milk bar any day of the week!

[Technocracy Timmy]

I still smoke cigarettes. Why, you lookin for a cigarette pen pal or somethin?

[Agonized-Statism]

That's a pretty sweeping statement. Long hair has come and gone over the years (mostly gone), the negative effects of cigarettes became known (but theoretically safer vapes have been taking their place), motorcycles have never been a practical means of transportation for most people and biker gangs never recovered from their leaders getting busted for drug distribution and murder during the 'tough on crime' days, and rock exhausted its experimentalism- becoming a tired mainstream sound like jazz before it- and stayed a largely white niche. New generations like the wider variety of sounds you can get out of electronic music at a lower cost and with fewer barriers to entry.

[buritobr]

Well, I don't like the motorcycle culture https://apnews.com/article/caribbean-coronavirus-pandemic-health-2a5fe1181e7b2cf683273ef37be0e5d6