[wutbrodo]

For the same reason I use a combination of transit, Ubers, and rental cars to get a far better experience than car owners at a fraction of the cost. For the same reason that the average person gave up horses and large plots of land and indoor woodfires for heating and cooking: if something is horribly inefficient and costly relative to an alternative, eventually society stops subsidizing it, and the only ones left doing it are the highly irrational or the highly passionate (compare horse ownership 150 years ago to now).

There are obviously advantages to owning a car that transport-as-a-service doesn't offer, but the point is that once an alternative is available that's better from a global utility perspective, it doesn't make any sense to subsidize the costly decisions of the irrational (barring interest groups that we as a society choose to explicitly subsidize, like families or the disabled).