I live on a small (a dozen houses or so) estate. And i'm a nosy cow, so every time someone puts their house up for sale, I have a look at it on rightmove. Every single house that has been up in the last few years has upgraded their kitchen and often their bathrooms from the original.
Our houses are top end 4 and 5 bed houses. They didn't have cheap fittings put in them, there was a decent choice of finishes. I have raised four kids in my house and, honestly, my kitchen is in really good nick. I have one travertine style bathroom that looks a bit dated, but not badly enough to rip the whole thing out.
Some people just seem to spend money for the sake of it.