When us older riders started riding, the only street motorcycles available other than Harleys were what would now be called "UJMs" (Universal Japanese Motorcycles). They were fun, inexpensive, inoffensive ways of getting around. But then they started making them more powerful, more expensive, louder, and split into two camps: cruisers and sportbikes. The technology tripled, performance skyrocketed, and they became as much lifestyles as transportation -- you wouldn't even consider riding a Harley wearing sportbike leathers, or vice versa. Helmets alone now run many hundreds of dollars, or even four figures if you want a really cool one. I remember buying my first bike, a 1984 KZ550 off the showroom floor, for $2000, with enough left over to get a helmet, some gloves, the first month's insurance premium and a couple tanks of gas. You couldn't even come close to that now, even correcting for inflation.
I wonder sometimes how the kids even COULD get into riding if they wanted to, given the budget constraints young people have, or what their motivation would be for wanting to try it out. If you're not interested in either the boy-racer or leather badass lifestyles, what does motorcycling really have to offer nowadays? Of "fun, inexpensive and inoffensive", only fun is easy to achieve now, and I wonder how much of that is because I'm already a rider. I wouldn't even want to try learning to ride on a 1000-pound cruiser or a fire-breathing rubber shredder.
Electric bikes are expensive, but that's changing (slowly), and they're big steps up in both fun and inoffensiveness. You don't have to be a hoodlum (or a wannabe), a rebel of any sort, or interested in any particular lifestyle. They don't literally scream at the whole neighborhood for attention, they don't anger or frighten other drivers, and they have a lot of appeal to earth-lovers and responsible, respectable people of all sorts. Most motorcycles left the mainstream for small niche markets; our type of bikes are bringing that back again.