It makes sense. Young people are willing to put up with the inconveniences of the city because they want all the things there are to do and want to be near all their friends/potential romantic partners and want all the job opportunities. Old people don't need the job opportunities (hopefully), most their friends and lovers are already dead, and they're too old and tired to run around doing all the things like they used to so moving away a bit seems more appealing.

Old people don't seem to mind community though, I think it's just that people who are often sick or hurting tend to be less social. Going blind and deaf doesn't help either. I imagine it's plain harder for old folks no matter what their preference for solitude.