Only because Apple wont support it?
Got it. The hardware is fine, but Apple is about to break the software (for no reason).
If 10.7 comes out in 2011, the 2006 model will have only lasted 5 years. That's why it's a bad value?
But how do you know in 2013 Apple wont break the 2008 mac pros?
The statement I was arguing with was "X model was the best value mac pro when it was released." I think the 2006 was certainly up there. I remember trying to find equivalent home-builts that barely stacked up for that price.
Apple is in the business of selling computers. Inconveniencing some users by restricting updates isn't in any way "breaking" the machines, and they will remain great for those who aren't bothered by it. Accepting the fact that the machine will eventually be outdated is inherent with buying any computer, even if you consider a 5 year-span short.