That's an important observation, in general (not just regarding living arrangements). I'm barely in my mid-50s, and don't notice much change over the past... 50 years. I am basically the same person as I was in, well, in childhood, not to mention young-adulthood or early middle age. But one hears that things really start changing at age 60-65, and especially so, another decade or two thereafter. So, I can extrapolate my needs/wants/sentiments with some confidence, to maybe a decade into the future. Beyond that, it's foggy.
Also, few of my former relatives made it to age 70, and only one grandparent made it (barely) into her 80s. I am already approaching the age when the males in my family started dying off. The future is foggy indeed!
Bottom line: it is very reasonable to suppose a substantial change in sentiments - about housing, about anything - between one's late-middle-age self, and one's elderly-self.