I got a call Monday afternoon that my 18-year-old son had been in an accident on his bike (fell, hit his head, taken in ambulance to hospital) and I was at home with just my bike. I started to get on the bike to ride to the hospital--it was a only ten-minute ride away--but then I doubted there would be a place to lock it up and I figured I would need a way to get my son home assuming he was released later (he was, 9 stitches in his head and lots of road rash and bruises, and NOW he is going to wear a helmet, he says, but I digress) so I called my daughter who wasn't far away and she brought me her car.
Otherwise, I'd not have hesitated to ask one of my neighbors to give me a ride--in fact, while I was outside waiting for my daughter one of them offered. Taxi would be absolutely last resort, but I'd use one if I had to.
If I needed to go out of town, I'd rent a car, or take a train or bus.
I very rarely wish I had a car. I occasionally wouldn't mind having one to borrow and use for some one-time purpose, but I've no desire whatsoever to own one again.