You'd think the Suns would've gotten to the Finals at some point considering the talent they've had: Nash, two-time MVP, Amare, permanent 20-9 guy who's basically unguardable in that offense, Marion, gets you 20 and 10 and you never have to run a play for him (also the best 6-7 rebounder in the league), Joe Johnson, eventual All-star with Atlanta, Boris Diaw, most improved player, Barbosa, sixth man of the year...they just can't seem to put it together (and they only play a 7-man rotation). I think that the Suns were good enough to win a ring last year and the first year Nash was there, and they were good enough this year, they just gave up on what they had.
There are many here in town who would agree with you and argue that the only reason the Suns didn't make the Finals last year was because the refs rigged the game. I don't like to give credence to that argument, but it is interesting that the ref who made the clearly bad call in the Suns/Spurs series and caused the Suns players to come off the bench and get suspended for the following game, is the same ref who was later found to be at the center of the point-shaving scandal.
On the other hand, I think it is far to note that the Suns have had some horrible injury problems in the playoffs. The real question of course is, is this just bad luck or does the run and gun style of Coach D'Antoni cause players to break down at the end of a long season?