S60 really got worse as the season went along, not helped by Amanda Peet getting pregnant and needing that storyline to be written into the show. I'm not actually sure how much of that was based on "shit we're not getting a second season, how do we tie up as many loose ends as possible" and how much was just... bad (relatively) TV.

Either way, while I agree with you on not liking the ending (and would have loved it to become as popular and long-running as The West Wing), still extremely glad that it became one of my "re-watch whenever I have nothing else to watch" shows, and still love it each and every time I see it.