Nothing surprises me anymore. It's one game people. They are the prohibitive favorite to get back to the finals.
This may be true, but I think this game is a huge one for a few reasons.
Firstly, San Antonio are one of two teams (Cavs being the other) that is considered to be a legitimate threatto the Warriors. Their record last year was nearly as impressive as Golden State's, Kawhi is another year better, and they added Pau Gasol in place of an over-the-hill Tim Duncan. Winning the first game of the series (by an absolute blow-out margin, no less) gives the Spurs a big mental edge IMHO.
Secondly, the Golden State Warriors have been pegged by many as "unbeatable" and a "dream team". Then they played the first regular season (with the entire lineup pretty much healthy and active) and give up 130 points while getting absolutely butt-smacked by 30 points.
Every team out there who may have thought the Warriors are unbeatable can now taste blood - the Warriors start the season by telling every team out there "If you play well, you can beat us - in embarrassing fashion".