Seriously, I imagine that line was included to make us dislike the character for his pedantry. All it did for me was make me love a character I'd barely taken notice of before.
I don't think that was the reason for its inclusion personally. I felt it was part of this season demonstrating the weaknesses in many characters in that they cannot seem to adapt their behaviour to placate a situation. Joffrey cannot control his psycopathic impulses for five freaking seconds when being just a little more discreet while still being a sadistic dick would probably be acceptable, Renly cannot stop playing for five minutes of a conversation with his brother which, doomed to failure though it probably was, could have been more amicable, maybe even 'let's sort out the Lannisters first', as Stannis did offer to restore Renly as his official heir (and given Stannis has not fathered any sons to date, Renly probably likes his chances of inheriting) and make some gesture at least, and Stannis is simply incapable of not being stiff and awkward.
Yes, he's playing fast and loose with his marriage vows (though I imagine he can come up with an explanation as to why it's acceptable), but it isn't, as Renly said, that he never wanted any friends, but that he just is a dull, charmless man with an uncompromising world view. The grammar business showed, I think, how difficult it must be for Stannis, as he's not just brutally honest ("I didn't love him, he didn't love me"), he genuinely is incapable of not following what he sees as the proper path (though he does seem willing to degrade himself morally to achieve that 'correct' aim), be it him being King whether he or anyone else likes it or not, or people using grammar correctly. He didn't sound like he was reprimanding Davos, and when he repeated it after Davos asked what he meant, he sounded distant, almost wistful. He just couldn't help it.
I didn't have much time for Stannis in the books [brief Stannis Show/Book comparison, not plot spoilery, but to play it safe],
and I do see much of that present in Show Stannis, but despite jumping off the deep end with Melisandre, and him being so charmless, having no dynamic delivery or truly powerful lines, I have become quite taken with the performance, which is almost anti-charismatic. He's so uncharismatic, I find him fascinating (rather than Charisn'tma [tm Terry Pratchett], where someone is so awful they are so compelling)
After seeing people practically recoil at the prospect of him being king, even before they knew he had gone fanatic and has now started knocking up foreign witches with shadow demon babies (I am certain he was not aware of the particulars; I expect she told him that it would be taken care of and that was it), and then actually seeing the unimpressive looking, unimpressive sounding man with no heat or fire despite his harsh view of justice. I feel for him a little. A little.
Small doses is probably best though, as he has complained and whined in most scenes, which would drag after a while.
Edited by kieran555, Apr 25, 2012 @ 5:10 PM.