When we were heading for retirement we swapped one large house for another, a tall three story Victorian semi in a busy town for a two storey much older house, which had the same floor area, in a village. We are now in our 70s and still have no problem looking after it, but accept that we may need to move to a house with a smaller garden at some point.
I am a thrower outer rather than a hoarder and could happily dispense with furniture from rooms like bedrooms if I had a house with fewer bedrooms, but I really object to the whole casual assumption by people, that when we get older and possibly not as fit etc, we should willingly accept that we have to give up things that we hold precious and rehome ourselves in a rabbit hutch.
Why do they not design housing for older people with bigger rooms and adequate storage facilities where we can keep all those things of sentimental value to us and where there is ample space for the accoutrements of whatever hobbies and interests we may have?