So one day I decided to just delete my account, and that was it. As soon as the account disappeared, so did my interest in the site. It was like a switch flipped in my head. I guess it was the internet points that were tickling the addiction part of my brain?
Next time I find myself wasting too much time on a social network, I'm just going to delete the account and move on. Unfortunately, I don't think HN lets you delete your account, so I'll need to get creative if I decide to drop this site too (maybe do something to get myself banned?)