Yes. There are people who would be better off with a bike than a car. I take that point and I believe it's easier than some people think.

The problem is that carfree isn't the right choice for everybody and it's not always obvious from the outside who it is or isn't appropriate for. If you aren't careful, advocacy here can come off as thinking you know your interlocutor's life and needs better than they do. (Which is a bit irritating.)

I'm going to describe a bit about my experiences, just so that you and the readers have a sense why somebody might reasonably benefit from owning a car.

I live in a small town in the northeast. We don't have particularly good public transit in, out, or around town. By transit, it's about two hours from my door to the nearest major city. It's less than half that by car. It's cold and slushy here a lot and therefore not a particularly pleasant place to bike.

The grocery stores I typically go to are five miles away, via a major expressway that isn't bike-safe. (The ones that are bikeable are small and expensive.)

When last I checked, there were only four car-share vehicles within ten miles. They're heavily used.

I'm in a medium-distance relationship, and that involves a lot of medium-distance travel with overnight stays. Having a car makes this much cheaper for a given amount of visiting, and I think it's worth some money to see my special friend.

I have some experience with the car-free life. I used to live in a dense urban area. Most of my friends didn't own cars and didn't want to. I myself was happily car-free for five years. I did the math before buying the car, and I'm pretty sure I come out well ahead.

I would be interested to calculate the health benefits and costs. I suspect this is hard to do, because the risk of bike accidents is hugely variable depending where you live and where you travel.