I recognize that, economically, shared vehicles is probably where we're headed.
Having taken public transit for the majority of my adult life, I don't look forward to it. Mostly because when people don't own something, they are extremely poor custodians.
It got to the point on the Washington DC Metro trains where I'd wear a special pair of gloves just so I didn't touch any of the communal surfaces and I'd skip trains because the doors would open and you could hear the coughing and hacking of all the sick people going in to work.
My "common cold" and respiratory infection rates dropped around 40% after I stopped taking public transportation in the winter.
I'm not even going to go into the various bodily fluids and similar things left behind in trains, bus, cabs... ugh.