Catallarchy's Micha Ghertner eerily echoes my own frame of mind:
Participating in message board and blog comment thread discussion is a guilty pleasure of mine, but one which detracts from time spent blogging. I find it much easier to debate directly and informally with someone than to find articles of interest online or to respond to other people’s blog posts. This suggests that my purpose in writing is not entirely or even primarily to spread ideas to the largest number of people, but to argue for argument’s sake. This is irrational, given my limited amount of time to spend online and my ultimate goal of making everyone agree with me.