Yes, I upsized from a sprawling four bedroomed house to an Edwardian semi with more rooms. I still cater for great numbers of people even though there are only five of us living in the house full time, so can't get rid of the dozens of plates, serving dishes, glasses, bed-linens, towels etc. I still sometimes run out of space and have to juggle sleeping arrangements. The problem is that if we did downsize we would still end up with people living with us long-term and then we'd be cramped. In one (three bedroomed) house we ended up turning our lounge into a bedroom for a year as there were me and my husband, plus three children all occupying the bedrooms - and a friend in need of accommodation (was supposed to be for a few weeks, but turned into a year). In each of our houses we've ended up providing accommodation for waifs and strays; at least here we have the space for permanent long-term visitors and it's easy to accommodate large numbers of people who are only staying for one or two nights. Our current lodger is part of the family now and even though he's had several work transfers he'd rather stay here and commute than move.
So, no downsizing for us for the foreseeable future. 