This is a little old, but here’s why Daring Fireball doesn’t have comments:
I wanted to write a site for someone it’s meant for. That reader I write for is a second version of me. I’m writing for him. He’s interested in the exact same things I’m interested in; he reads the exact same websites I read. I want him to like this website so much that he reads it from the top to the bottom, and he reads everything. Every single word. The copyright statement, what software I use, he’s read it all.
If I turn comments on, that goes away. It’s not that I don’t like sites with comments on, but when you read a site with comments it automatically puts you, the reader, in a defensive mode where you’re saying, “what’s good in this comment thread? What can I skim?”
I hear “I just don’t get your site” from time to time.
My response: “That’s oaky.”