I'm still as excited as ever, but:
I can understand if the emotional investment feels a little different. In all drama, you are ultimately rooting for characters. Regional allegiances are gateway into specific people and an easy shorthand, but it's the specific personalities that really take it to the next level. For most of its existence, the team has always been perceived as group of scrappy upstarts or under-appreciated weekend warriors in "South Alaska." The brash and/or workmanlike personalities of a lot of popular Seahawks (past and present) complimented this perception. This is really the first time in franchise history where a lot of our guys have been put in the spotlight and forced to adopt a more endorsement-friendly personality for the public. Nowadays, the only time they aren't riddling off politically-correct/prepackaged media statements, it's when they're upset with their contract. The Seahawks, as a perceivable amalgamation of characters, is different thing now than it was at any time prior to 2013. They are no longer the underdog; they are the "Man." You're rooting for Apollo Creed now, not Rocky.
Also, when was the last time an upstart team became a Super Bowl favorite and then actually won it almost immediately when they were expected to? That's a rare thing. As Rain City Redemption showed, we had the beginning, middle, and end of a movie play out before our eyes in a few short years under PC/JS. I guess anything that comes after the climax (2013 Super Bowl) can start feeling like the last 30 minutes of Lord of the Rings: Return of the King ("how many times can this movie end?").
That being said, if you're into pure football, there's a lot to be excited about. The Seahawks are currently the Vegas favorite for the Super Bowl, which means you can expect to see a quality product, and they also just loaded up with some really cool new talent. Imagine if you were rooting for the 49ers this offseason. That product is probably going to be terrible, and there's little to be excited about. My excitement for Seahawks football goes beyond wins/losses or the continued success of our newly established millionaires. It's about the new kids we bring in and the continued evolution of the team's football strategy. I won't be heartbroken if we don't win the Super Bowl (in fact, I don't expect it), but week-to-week, I still find there's a lot to be absorbed in and excited by -- new emerging players and good football, namely.