> to decorate intentionally in the way we do today
Most people not so long ago did not have the luxury of saying “that shirt is so last last year” , or “that living room set is a relic of the 90s!”.
Of course people always find ways to decorate and show off, but that’s different than what OP talked about WRT quality furniture. In the past that stuff was so expensive you bought it and lived with it, possibly across multiple generations. If the style changed you probably couldn’t afford to just swap it out.