I don't really dislike the Seahawks. It's just that, historically, Seattle has been a very mediocre "just there" team. They're not a legendary team like GB or the Cowboys, nor are they a laughable team like the Cardinals or Lions. You look through their past records and you see a lot of 9-7, 7-9 and 8-8 seasons.
As for the last year, cabbageboy said it best. They were a few close games away from being a 10-6 team (Giants, Titans and one of the 49er games) and their two previous postseasons ("We want the ball!" and collapsing at home against St Louis) gave me little reason to believe they would do anything last year either.