Those are valid points but you've got to realize that not everyone wants to live in the same utopian candyland that you do.
Most people in America :gasp:
want to live on a quiet suburban street and couldn't care less about having a pedestrian connection to the cul-de-sac next door. The kind of people that buy houses such as these do not do so simply because they can't afford anything else, they
choose these kinds of neighborhoods. Why not give them some viable transit options? A well-established freeway system and mass-transit options to go along with it makes much more sense for modern society than tearing up America's infrastructure and issuing everyone a bicycle instead.
Your world view seems so myopic sometimes that I wonder how you are able to function as a member of society, going about arguing that your views are absolutley correct and that the other 95% of the population is completly wrong about nearly everything.
Also, I'm about as concerned about rubber tire dust in my water as I am about being attacked by robots. Where do you come up with this stuff?