I've said it before and I'll say it again: building the future around cars of any kind is completely unsustainable. We cannot reproduce the rates of rich world car ownership in the developing world without mass catastrophe (raw materials/labor needed for construction and maintenance, raw materials/labor/space needed for roads and parking lots, literal tons of waste--batteries, tires, steel, plastic, foam--, energy ne…
If you live in a suburban house, with a yard, and drive a car, its likely poster is part of the problem. Its easy to externalize blame and point fingers to something/someone else, when the reality is that people need to look inward. The uncomfortable truth is these macro policy desires, are very much a case of "Do as I say, not as I do" I speak this as someone that does not own a car, or have a yard, and drive a mope…
I need to make myself clear though around this line "I don't want to restrict anyone in the future from owning a car".
I don't care if anyone owns a car, I don't think that's what really matters. What I do think is that we as a nation (I'm in the U.S.) need to stop cities from continuously _subsidizing_ car infrastructure through taxation. You mention cost issues for the poor. Please realize those poor people you speak of are forced through taxation to subsidize car infrastructure even though those same poorer people may not even own cars themselves. This is really where the system breaks down. Poor people who may live in city centers are paying a portion of their taxes for the rich people to have nice roads paved out to their spread-out suburbs. Those who choose to live in the suburbs should pay for the increased costs of infrastructure that they require. You should pay fewer taxes to live more efficiently in urban or shared housing.
A lot of the ideas I'm spouting off here are from organizations like StrongTowns. They and others like them have been doing a great job of putting words into action, but we need many more people to be in this movement and we shouldn't promote infighting on details. Individual change is great, but it will not change anything at scale. The same thing goes for climate and general social progress. We need to force change at the government level, and stopping the subsidization of car infrastructure is just one step in that long process.