One thing I don’t think anyone was willing to admit until recently- Peanuts stopped being funny around the ‘70s.
I remember reading through the Fantagraphics collection recently and deciding “I’ll stop once Franklin shows up”. Despite being shocking in 1960s America, Franklin is as boring as all get-out. My mom told me that I should keep going anyway. So I did, and lo and behold, a few weeks after Franklin debuts is the incredibly saccharine “Snoopy’s original owner gets cancer” storyline. I stopped reading.
It’s not too long afterward that the strip was forevermore concerned mostly with cookies, zambonis, Rerun, and being generally depressing. I’ll take 1950-1967 any day.