I'm a data purist.
I think in terms of the 6th normal form, and calm myself down to the 5th normal form, then work in the 4th normal form as I try to tame myself down to work in the real world for the 3rd normal form, and if absolutely needed, as shown by empirical evidence in speed tests, etc., denormalize to the 2nd normal form if ABSOLUTELY necessary.
I'm not capable of talking on this topic without flying off into a profanity and obscenity laced rant.
It's just so completely... well... I think my position is clear enough by now.