Yeah, it's one reason why Seattle's such a forgettable team to many NFL fans. They've just been nondescript and mediocre their entire existence, really.
Since the advent of the 16-game season:
8 seasons of 6 or fewer wins
5 seasons of 10 or more wins
19 seasons where the Seahawks final record was either 7-9, 8-8, or 9-7
Not included in those totals are the 2 strike-shortened seasons when the Seahawks went 4-5 (1982) and 9-6 (1987).
This is a franchise that's essentially lived its entire existence with very few exceptions within a game of .500. It explains why we've never had a #1 overall draft pick, and why we have never won a SB (opinions about SBXL notwithstanding).
And it's one reason why I've been willing to give Carroll and Co. plenty of time in revamping this team. Fully revamping a team with a history like that isn't a one or two year project. And building a team that will become a contender year after year isn't usually done with a quick turnaround. I know many folks were demonstrating impatience with Carroll and Schneider late last season and early this season, and pointing to turnarounds like the year the Dolphins went from 1-15 to 11-5 or when the Rams went from 3-13 to 13-3 as evidence that our front office was taking too long. But the facts are that those Dolphins regressed to the mean, going back to hovering around .500... and they're still there. Those Rams were a power for a few short years, and then fell off the map for nearly a decade. To establish long-term success takes more investment in both time and resources. I think Carroll is on the right track.