Comment by HeinzStuckeIt

IMO, Watterson stopped at just the right time to preserve his legacy and keep the strip associated with childlike wonder and innocence. In the last years of C&H there was a certain curmudgeonliness creeping in, as Waterson started to mock modern commerce and art. I think the cartoonist was naturally growing older and more disillusioned, and his strip faintly started to sound like Calvin’s dad instead of Calvin.