"so fervently advocated by sociologists and their alien ilk"
I don't think we can really blame the sociologists. First, it they're truly sociologists they shouldn't be preaching, just observing, recording, analyzing and correlating. And second the media began portraying or even glamorizing single parenthood as early as Murphy Brown, not to mention The Courtship of Eddies Father. Who by the way was not a vintage drummer, just to keep it remotely on topic.
I'd like to see someone do a study on drummers, particularly players/collectors of vintage drums. I think we are an odd breed, unlike any other type of musician.
I know a couple of sociologists who did a study on Elvis impersonators
and for the record, I still believe we can and should come to an agreed upon definition (for our purposes) of vintage.