Because it has to be repeated again and again: We need to drastically reduce the number of cars to solve our problems.
@AndiPopp than drastically invest in public transportation outside of cities…. The people there have no chance without cars…
@Grey08 Yes, this is a part of it. But increasing living density is also part of the equation. Many "non-city" areas are surprisingly unsustainable.
@AndiPopp there a minor problems first of all rental prices are insane in the city. Most people can’t effort that. Than not all people are capable to live in a city where it will be never dark or silent enough to sleep with a open window.The quality of life is also worse in a city and that will not change with les cars because there are not enough plants in a city. Also wind will be a problem between the “skyscraper” see NYC. There a many other social problems when you cram people in dens areas.

Our Western automobile-focused culture is unsustainable on a planetary scale. The global ecosystem would collapse if all people owned and used cars like we in the West do.

Any statements regarding "most people" or "all people" should take that into account.

Major branches of ethics require you to make exactly such statements. (Read Kant, for example.)
@AndiPopp
@Grey08