There's a place for highways, to get people from town to town fast, but city streets should be for the people who live there. Wider roads and faster traffic in town mean fewer sidewalks. Houses are built further back from the street, not only for safety but because the road might be widened in the future. That means big useless front yards and neighbors living further away from each other, and people are less likely to get out and walk. That's the way to isolate people from their community.
Abusive comment hidden.
(Show it anyway.)