I'm a long time fan of Scrubs. I own every season on DVD so far. I'm going to stick with the series till the end.
That being said, Season 7 wasn't all that good. Some episodes were great, but the low points of the season(most notably the episode that was aired as the series finale) were among the worst episodes in the entire series. A big problem with this season was with the network, rather than the show, as episodes were aired out of order, leading to continuity being all kinds of wrecked. Hopefully this is corrected for the DVD set, but there were a lot of other issues that stop this from being a great season.