I'll admit that you make a convincing point. My main concern is wether or not I should continue investing in Canon glass with the eventual plan of buying a 5D III when for the first time a Nikon camera has made me question my loyalty to the EOS system. Despite the fact that I still see the D800 as a more advanced camera (the Ivy Bridge to Canon's Sandy Bridge, to continue your computer analogy), I've heard enough today to be reassured.
Hmmm I don't know, would you leave your wife for another pretty face that came along?
It's a practial question of investing in a system of lenses or not. I don't see the problem wth that.
Well I guess you could sell all of your glass and start over. Then what happens if Canon's next camera makes you question your loyalty again?