It's awesome for the teams involved but it does suck for the rest of the NBA in my opinion. The stupid Durant move has made a league that already skews on the predictable side even more top heavy. This is the first year I can remember where there is only one Christmas Day game (Cavs v. Warriors) that is even interesting and it's mostly because it's hard to fathom any other teams in the Finals.
As an aside, this is why I disagree with the idea (pedaled by some in the media) that the Durant move was good for the league because "everyone will want to watch the Warriors." I suspect that whatever extra eyeballs that Golden State will draw will be offset by the decrease in interest in the Thunder and in other teams that cannot reasonably compete with the post-Durant Warriors. Not to mention that Golden State already drew plenty of attention from both the media and from casual fans last season; it is not certain that the addition of Durant will lead to a tangible increase in the interest in a Warriors team that was already historically good without him. I mean we aren't even one year removed from Warriors-mania and ESPN having a "nothing but Steph" tab on its website - how much more popular can the Warriors even become?
That being said, you guys should absolutely enjoy this stretch where your team is competing for championships every year against one team. It is a throwback to the heyday of the NBA, which was built off of the great inter-conference rivalry between the loaded Celtics and Lakers squads. And in some ways the greatness of the Warriors elevates the appreciation for the players on the Cavs for being able to compete with and defeat such a great team. It's just that, as a fan of a different team and of the league in general, I wish there were other dangerous teams akin to the 80s Rockets, Blazers, Sixers, or Pistons capable of challenging and even defeating the two heavy favorites (Spurs come closest, but I personally think the Warriors will destroy them).