There are many disabilities which don't allow driving, not to mention that in countries like the United States which don't take care of people there are many disabled people who cannot afford to own a car.

Accessibility doesn't have a single solution but if you look at areas which are welcoming to bicyclists they are also much better for a wide variety of disabilities because they have things like sidewalks, safe vehicle speeds or limited vehicle access, curb cuts, etc. You'll see people in electric wheelchairs or tricycles using bike lanes/paths, blind/deaf people don't have to worry as much about getting hit by a speeding car they were unable to notice, etc.

If you don't like bicycling, think of them as safe mobility lanes — the users certainly do, and we should all back having more of them because if we're lucky we'll live long enough to need them.

Not to mention asthma never prevented anyone from cycling. Maybe you won't win the Tour, but you can definitely commute cycling with asthma if your city is designed around humans and not cars.

Don't recumbent electric trikes largely address this issue? Someone unable to operate one of those isn't very likely to be able to operate other types of (larger and faster) vehicles.