I bet you and I are from the same generation.  When I was young, being fat was universally considered a bad thing.   And the weight/size you were when you graduated high school was the weight you were expected to be for the rest of your life, plus or minus 10 pounds (or 20 pounds, max).      I'm still the same weight and size I was when I graduated high school.  When I was young, my weight was normal and unremarkable.  Now, in 2016, I'm considered "skinny" and an anomaly.