They're exceptionally disability friendly and many age specifically adapted for people with disabilities. E-tricycles are used a lot for this purpose. You see them a lot in some countries.

E-bikes address the sweatiness and hills issue. But even without electric assistance, people in Germany and Austria have managed.

It doesn't always require new infrastructure to be built. Ideally infrastructure for cars is repurposed for walking and cycling. This is something that needs to be done anyway because lots of people don't drive, causing transport poverty.

My bike was $270 second hand and is awesome.

The range issue is fair. Consequence of designing exclusively for cars. Then again, no need to cycle every journey. Just the short journeys already helps a lot. Where I live most car journeys are under 5 miles.