Should the MTM show have quit when they did?

I think it's good that it quit when it did, so that we didn't have to witness a shift in style as the decade came to a close.

I always hate when television programs go on so long, that by the time it's over, it looks nothing like it did when it started. I mean, take THE DICK VANDYKE SHOW, for example. Can you imagine that program going on into the 70s? No. It's much too 1950s – 1960s, in its style. Same with THE MARY TYLER MOORE SHOW – it's much too 1970s and its style to imagine it going into the 1980s, a decade with a completely different style.

Please excuse typos/funny wording; I use speech-recognition that doesn't always recognize!

I saw an interview with Mary, and she said she would have loved to continue, but the rest of the cast were ready to call it quits because they had other shows in development. Ed Asner went on to Lou Grant, Ted Knight to Close to Home, and Gavin McCleod to Love Boat.

Correction - the name of Ted Knight's show was Too Close for Comfort.

The show ranked #39 its last season (compared to #19 the previous season), so the show's popularity was already in a fairly sharp decline. Losing #1 All in the Family as the CBS Saturday night lead off series starting with the 1975-6 season also hurt all the remaining Saturday shows - MTM dropped from #11 to #19 that year.