Not to mention that in a substantial portion of the world, motorcycles aren't practical for most of the year. Snow, ice and cold aren't great for two-wheeled vehicles.
The channel is mostly on city planning that supports walking and biking (rather than motorcycles) but the Dutch bicycle in the snow because they have an infrastructure that supports it.
https://www.youtube.com/watch?v=Uhx-26GfCBU&list=RDCMUC0intL...
Of course they don't have mountains which is the issue where I live.
Add the sense of entitlement of large 4WDs to complete non-enforcement of road rules protecting riders of both motor- and acoustic bikes by the Police, and you've got a deadly mix going.
There is mesh synthetic safety gear that's quite good these days (I'd imagine it'll eventually disintegrate on a long slide, but will at least help with impact. Also road rash typically isn't what will actually kill you). It also comes in colors that will reflect the sun a little more than black, which is still the most popular motorcycle clothing color by sales.
I used to ride a lot in Ocotillo Wells where it would hit 110F in full safety gear, so it is possible. Helps when you're going fast enough to get wind chill.