When you hit your 40s, your expectations of a lot of things change. You start to take joy in the little things. They are the things that you never thought you care about, granted, but that’s what being middle-aged is like. And kids don’t get it. At all. Me, to kids: “Wow, the car has been driving so smoothly since I got the tires rotated! I’m so glad I got that done.” 13y.o *long pause*: “Being an adult sounds so sad sometimes.” — Stephanie Ortiz (@Six_Pack_Mom) February 22, 2019   Take birthdays, for example. When you’re young, you’ve got wants. If someone were to ask you for a gift list,…