This show went on way too long
I have recently gone back and watched some of the episodes from the last couple of seasons, and I had forgotten how horrible they were. Season 9 was atrocious. It felt like a completely different show. The only episode from season 9 that was good was "Off We Go", which should have been done a couple of years before. By season 5 the show really was starting to run its course. Julie and Barbara weren't in high school anymore, and even though Barbara still lived with Ann it wasn't the same. The show was in is glory years when the girls were in high school, and Ann was making her mark in her career, etc. This show probably could have gotten 5 quality seasons. Why not call it quits and go out on top?
I hate when shows run on too long and become very bad and almost unwatchable. "All in the Family" was notorious for this. It definitely should have ended when Mike and Gloria moved to California. The episode where they left would have been the ultimate series finale. But no, that show went into a 9th season which was horrible and even spin-offs that were even more horrible. "Leave it to Beaver" ended just in time. Actually, it probably should have only lasted 5 seasons rather than 6 like it did, but its last season was still high quality.
Another thing that bothered me was that the wardrobes became too glamorous in the later years, glamorous to a point that the show no longer had a realistic feel to it. It was so realistic in the beginning because their everyday dress was ordinary, and the furniture ordinary. All shows that ran into the mid-1980s were guilty of these stupid makeovers.
"One Day at a Time" should have ended with maybe Barbara going off to college, Julie getting married and even having the baby, and possibly Ann deciding she was finally ready to get married again, and then all 3 going their separate ways. They certainly could have had a better ending for Julie. Maybe they could have had her move back to Logansport to be close to Ed. Something better could have been done. Doing that to Julie's character made Ann's character seem like a failure in a way, that she couldn't do a better job with Julie. And, I am glad the show ended before they could shift the focus to the two couples living in that house. That was so boring! Barbara should have gone to a 4-year university. Isn't that what Ann hoped for her girls, that they would find their own identities first before getting married? That would have made more sense. Maybe end with Barbara leaving the nest for college.
Even if everything else was left the way it was, the "Off We Go" episode should have happened in season 8, and there never, ever, ever, ever should have been a season 9!!!!!