Definitely The Tail End by Tim Urban

https://waitbutwhy.com/2015/12/the-tail-end.html

``` It turns out that when I graduated from high school, I had already used up 93% of my in-person parent time. I’m now enjoying the last 5% of that time. We’re in the tail end. ```

^ This is the crux of it, in familial (parental) relationships, we spend most of our time with them early in life, and that we don't get nearly as much time with them after graduation.