For the most part the town I live in is small enough that I can walk to wherever I need to go -- my favorite grocery store is about a mile away, the vet hospital where I take my pets (and also train in agility) is just a bit over that. I tend to do a lot of shopping online in any case. I do drive other places occasionally for non-work events, mostly related to my writing groups, but I could probably use one of the ride sharing services or even take the bus, depending on where I need to go.
I run into problems with work, though. Once a week I drive about 65 miles to get to the main office, and then another day I drive about half that distance to get to a different one. A while back I looked up how to get to the main office using public transportation, and it turned out that it would be at least four hours, probably more. Turns out we aren't that great at public transportation around here.
I suppose I could move closer to work -- I used to rent an apartment in that area before I had a car -- but I can't live in an apartment any more and houses in that area are unbelievably expensive. And it's not someplace I really want to live. Plus, if I ended up switching jobs I'd be stuck commuting a long way every day.
I've even thought about moving to NYC because people there don't drive, but that's more than a little ridiculous because I'm never leaving California again.
So... yeah. I don't have an answer. Selling everything and living in an RV in the desert is looking really attractive right now...
(The dogs have no time for my existential crisis because it's time for agility.)