Two- and three-wheeled vehicles, used by billions of people, are moving away from fossil fuels to batteries faster than cars in countries that have made the energy transition a priority.
Been riding in America for decades. There is risk, but it's still a lot lower than the risk associated with inactivity. Ride, and ask local government for infrastructure change
Maybe. It really depends on your location. Biking on the only road out of my neighborhood would be all but suicide because there is no shoulder, it is high traffic, and places without enough forward visibility for cars to react in some places. It isn't due to lack of demand. I see plenty of people on bicycles in areas where it is reasonably safe to do som In other places I have lived, I agree with you.
I really hate blanket generalizations like:
There is risk, but it's still a lot lower than the risk associated with inactivity.
That also assumes that the person is inactive otherwise. Some people make an effort to exercise, others have physically demanding jobs. It also assumes the level of risk where it will vary quite a bit depending on location.
I've been around enough people and places to have seen that most Americans aren't exercising and to know that most of the places people have told me aren't good to ride actually are. There really are some people who do exercise, and some roads which aren't safe, but that's usually not what's going on.
I'd describe the usual as a combination intimidation, fear, and concern about social isolation for doing something unusual.