"what if you need to transport furniture like once a year?" I can rent a transport van or pay to have it delivered to my home, they'll even carry it into whichever room I prefer for me.
I've also seen people transport entire pieces of furniture on public transit.
"what if I can't cycle or walk that much?" electric bikes and e-scooters.
"what if I have nowhere to put a bike/don't want to owm one for some reason?"
Shared public bicycle systems:
"but what about people with kids?" kids can use public transit too.
Also, meet the humble cargo bicycle:
(they can also be electric)
"what if someone is disabled/in a wheelchair?"
If their disability makes driving a car safely difficult, unsafe or impossible for them, but they can use other options, they're so much better off (that's a lot of disabled people, especially the elderly)!
If a car really is the only option, they should be able to use it, and if those of us who don't really need to drive stay off the roads, that will also be a much better experience for them.
Some places also offer special transport vans for disabled and elderly people that can pick you up at your home and bring you wherever you need to go! That means not every disabled person needs to buy and maintain their own adapted car/van.
When you have a hammer that you're paying tons of money for every month, you feel like you have to throw it at every problem you have, even when a different tool would've worked just as well.