> It's the "character" of their neighborhood.
> Somehow we've gotten into a cultural state where everyone expects the place they live to stay exactly as it is for their lifetime.
I think this is just human nature.
> It's totally implausible and destructive, but people fight for it anyways, even when it isn't in their financial interest.
I disagree. Simply look at Europe or historical districts in the US. Its definitely not implausible, and only destructive to new citizens who want to live there (that don't have an existing vested interest in the area).
All politics is local, as they say. If local citizens want to keep their neighborhood the same, that's up to them, and its their choice.