All the time-consuming "just hang out with them and talk to them like humans! Hug them for ten minutes! Make them complex, healthy dishes for every meal! I do it and it all works so well! I mean I also have a night nanny and cleaning service but I won't mention that..." goes out the window when one kid's about to kill themselves with furniture, somehow, you're not sure where another snuck off to but you suspect the worst, the third's making some god-awful noise in the other room that you're pretty sure will end up being expensive one way or another (oh no... did they make that sound or did the dog?) and meanwhile if you take your eyes of this sauce for one second it's gonna burn and it'll be pizza night... again.
Yes it's not constantly like that but it's always kinda like that. I understand it gets better when they're older. And I've heard from multiple people with four or five that the difficulty levels off after three kids. Up to three it's certainly non-linear. When for some reason we're down to one it's about as easy as having zero, now. Yeah, I bet whatever crap you read about on the Internet works, one-kidder. F*cking anything would. One's nothing.