to crit or not to crit?

I keep telling myself I'm not going to get any more involved in the concrit/review debate, that old saw that's currently making the rounds in SGA fandom. Especially because I straddle the fence on most of the issue, and get uncomfortable with the rhetoric and ideals that both sides throw around. (synecdochic eloquently expresses my general beliefs here.) But in discussion on friendshipper's post, a couple points came up that illuminated part of the situation for me, and why people get all crazy about it.

( Cut because I am longwinded. No surprises there! )