Your post assumes facts not in evidence.
Does everyone want to wear the latest fashion? I dress more or less the same as I always have. I'm not unusual.
Does everyone drive the newest looking cars? I buy what's on the lot, and drive it for 200k miles. Function and cost are far more important than "style". Looking around the parking lot at my office ... I can safely say that I'm not unusual.
Does everyone "show off" the most high tech electronics? Hardly ... and this is one area, at least, where "newer" really does strongly suggest objectively, measurablty better performance.
Now ... living in a house that looks like it might have been built in 1750 isn't so wierd. Maybe, just possibly, folks got something fundamentally right then ... and folks don't want to throw away something good, just because some designer who wants a paycheck says it's "dated".
“Your post assumes facts not in evidence.”
Not all all.
Save for a few leftover fans of Adam Ant, no men are wearing powdered wigs, kickers with silk stocking, greatcoats and tricorne hats these days. Many do, however, live in homes decorated with bombay chests, wainscoting, and crown moulding right out of Monticello, if not Versailles. And how many ladies wear petticoats, hoop skirts, and bloomers anymore?
Now, I ask you, if you go to your local car dealer, just how many new vehicles, other than a few trucks, have floor boards or suicide doors? Pontoon fenders and exposed exhaust pipes?
Just how many MP3 players can you find at Fry’s that are as big as a small safe, with an arched cathedral style cabinet, large bakelite knobs, and vacuum tubes inside?
It is readily demonstrable that style and design in almost every other area of human technology has changed radically over the last two thousand years. Except for architecture and decor. The same styling cues and motifs have been recycled ad nauseam, and not always with the greatest of dexterity.