Also a safe public area to run in. Clean air, sidewalks, and a safe environment for women/people of certain skin tones are unfortunately unavailable to a very large portion of the world. Even in much of the US.
The neighborhoods with sidewalks cost a lot more, in my experience.
And then you go further upscale and the sidewalks disappear again.
For example Silicon Valley suburb Saratoga has hardly any sidewalks. Median house price is around $4M.
Safe place to run though.
Those are old areas developed before codes requiring sidewalks that happen to be in a good location where rich people decided to congregate back in the day.