YOU ONLY GET 18 SUMMERS WITH YOUR KIDS. But, guess what? You also get 18 Springs, and 18 Falls, and 18 Winters. I bet when my kids are 19 or older, we might still have summers together too. You also get more than that actually because when your kid turns 18 and they move out (we hope), do you stop being a parent? No. Do they stop needing you? Yes, more than when they were…