In my opinion, just enjoy watching Dirk and some pretty good basketball while you can. I usually agree that tanking is the way to go, and I actually liked Sam Hinkie's strategy with the 76ers. But we were never going to do that with Dirk, and even without Dirk, we are too good to get a top draft pick in the next few years. At this point, I'd rather just enjoy watching Dirk and some of the young guys compete.
Again, I think tanking is usually the way to go, but It's not like tanking for 2-3 years guarantees you any sort of title contender in the future. Sure, every once in a while you get a Tim Duncan or Lebron that propels you to a contender. But you also have teams who have been bad and tanking for forever. Just look at the Suns. They've been bad and stockpiling assets for forever and have nothing to show for it. It seems like every year they are just trading off good pieces because they realize they still aren't a contender and want to get more assets for their good players. A few years ago they traded Dragic bc they felt he was too old compared to their young assets. Now they are thinking of trading Bledsoe bc he may be too old compared to their young assets. It's a never ending cycle. There are plenty of other teams like them who have been bad for a long long time (kings, Pelicans, etc). And look at the lakers. They are probably in better shape than most teams that have been bad for years. They've had some top picks and are really young, but I don't think anyone thinks that any of their young guys will be good enough in the next 2-3 years to be a legit contender (they will depend on signing a big free agent to be a legit contender in a few years).
Bottom line, it takes so much luck to become a contender through the draft that I'm not going to be made if we get the 8th seed for the next few years.