I would say more tastes than lifestyles. You can use old wardrobes, drawers etc. just fine. It's just that people are used to looking at vaguely modern (often bland and disposable) stuff from the media, and at least think other people would think them weird and nonconforming for using old furniture. Even if you can get it relatively cheap, which is suggested by the "no one wants it" phrase.
I think there is an ethos of buying new and overpriced (and also buying "experiences") to show off that you have money for that and aren't some poor nerd trying to optimize their budget at the expense of consumerism. Often you don't actually have that much money for actual conspicuous consumption, so at least you're trying to imitate the Apple aesthetic. I am getting this vibe from talking to a distinct set of people of my age group, of course not all.
A different take on lifestyles: unfortunately there's a big gap in convenience between being able to move across the world and get everything you need in one afternoon in IKEA, and tracking it all down second hand.
I think there is an ethos of buying new and overpriced (and also buying "experiences") to show off that you have money for that and aren't some poor nerd trying to optimize their budget at the expense of consumerism. Often you don't actually have that much money for actual conspicuous consumption, so at least you're trying to imitate the Apple aesthetic. I am getting this vibe from talking to a distinct set of people of my age group, of course not all.