Here's the way I see it.
Motorcycles in the USA have always been toys for the great majority of people, ever since the days of the Model T Ford. Space and economic considerations had Europeans and Asians on motorbikes ever since they were invented, INSTEAD of using cars (not along with a car).
Up to the advent of the Ford Popular and the Mini and such, a typical working class English family would have something like an M21 BSA double-sidecar outfit instead of a car. Americans never did that - the bike was always Uncle Buck The Family Outlaw's hell-raising ride.
Now, for those few of us in the USA who started out on bikes and didn't have a car until they got married, we used to ride CB-250 Hondas and Yamaha DS3s and Harley Hummers and Honda Super 90s. They got 60 MPG on $.20 per gallon gas, tires were $10 out of the JC Whitney catalog, replacement chains would get cut off the huge reel of industrial chain at your cousin's workplace, and the bikes themselves were $600 new. Even a young fellow making $2/hour could afford that when it was hard to afford a car.
Today, tires are massive $230/each propositions, the marketeers have convinced people that unless you're straddling 1400cc you've got nothing between your legs, bikes get 30 mpg, and motorcycle oil is $6 a quart (not $.29/quart). Insurance is through the roof for young men. My own little car is WAY cheaper to run per mile than most all of my motorcycles.
We've sort of done it to ourselves ....
Lannis