My friend that is like me a network engineer just bought/building a new house, and was talking about getting a 8 port switch. I was like what, for a new, large-ish house? He was talking about just doing wireless, and I'm like ugh, but what about all your kids watching netflix on 8k+ tv's, all on wireless at the same time and complaining to you, you'll wish you had wired their tv's. Not to mention security cameras, doorbells, multiple AP's potentially, ethernet-based sensors for things, etc, all things that need Power over Ethernet too, or at least benefit from it. It got him thinking at least.
Then he went back to the builder and the builder gave him 2 options, take what they give, which is an ethernet drop in each room in a random spot back to a closet of whatever cable they happen to have that day, or nothing. I'd have been pissed, and he was at that point. I told him better luck next time on his next house.
It shouldn't take a network engineer to build a decent home network, but apparently it does and any home builder worth a damn should in the modern age should consider it.