That said, I'm not particular anymore about having the best or the most of anything. As Captain Mal might say, my days as a completionist have certainly come to a middle. I don't have to have it all -- only the parts that I enjoy the process of getting. I've given up on building the "correct" profile for each and every character or doing everything I do in game "right."
I'd probably be more concerned about doing things right if I were trying to push my way up the progression charts or amass an intimidating win-loss record in PvP. I'm not, though; I'm just checking out the content in raid instances and having fun messing with my enemies' heads in battlegrounds. I don't need to be "right" anymore -- but woe to anyone with that attitude who's nonetheless swimming in the deeper waters where the virtues of optimization hold sway. My rule: If you're going to play with the big dogs, you'd better know where to bite!
Do you spend a lot of time and effort optimizing your gameplay and making sure you're doing things "right"? Does that matter for your playstyle? Is it something you enjoy, or is optimization a necessary evil of getting to enjoy the parts of the game you like most?