AR's are certainly capable of 1/2 MOA and better accuracy. The weak link is usually the shooter, barrel, and ammo, as we've seen in the 24HC-BRC thread. For what they are, they are accurate enough. People need to quit chasing benchrest precision with them and just shoot good ammo in them and blame misses on themselves.
I'll dissagree to a certain extent. If you don't strive to be better, you will never get better. "Chasing benchrest precision", as you put it, is motivation to be better. More people need to strive to be better. All this talk about being top chidt and not proving it, sure gets fu cking old... Or should we all just agree, that we are all 1/4 moa shooters?