Earlier quoted context omitted.
Real tip is don’t have kids. Corollary to your number 1
I don't agree with this because you want to have kids if you are to have any chance of anyone caring about you when you are old. I guess some might be satisfied with people caring about the money you have when your old, potentially leaving some of it to them, but that's not my cup of tea.
Your retirement plan should work regardless of requiring you breed live-in caretakers.