> Cars scale, because if on one day for some reason only a single person wants to go anywhere, only a single car will be deployed.

They downscale pretty well, although the roads and parking space are still there. In practice downscaling does not happen much, though.

> If you need to take a bike or walk, then why not just go to your destination that way?

Because it would take me a whole day walking and only an hour walking + train ? Also, not every passenger needs a bicycle.

As for carrying stuff, I do have a small car. I still mostly move by bycicle and public transportation because it is often faster, easier, cheaper and I dont have to bring a metric ton a metal to carry my 80kg of body meat.

The car is for visiting remote places with the kids, for example. Public transportation just doesn't work there, agreed.

For the record I never had any real issue with anyone in trains or buses.

I did have to wait for 2h occasionally when there some accident on the line but I also got stuck in jams for hours because of some accident downstream. So it's a tie for me. This said, I never had to wait for 2h because I missed a bus in a well deserved area.

I believe it depends heavily on the place we live in. FWIW I'm in a second tier French city, about 200k inhabitants.

Where are you?