I don't think it's subjective at all. There are cities that are clean and safe and well run, and you might not want to live there because they have a lot of people, but that doesn't make the city bad. I think your preference to live away from people is subjective, and that's fine, but the rule can't be that you get to live right where you want and no one else can move. Either people can move or they can't. I presume you don't live in the neighborhood you grew up in?
I’m not saying the solution is for people to not move, I’m in favour of people living where they want. I don’t have the solution to the problems caused by rapid growth, it’s probably some combination of allowing mixed zoning so that there is enough housing and supporting businesses for the new residents along with better planning of or restrictions on municipal expansion to avoid sprawl and encourage better use of the land within the existing municipality. There’s probably a bunch of other reforms necessary to prevent the bad parts of gentrification and provide more of a safety net for people who get displaced. It’sa big hairy problem for sure.