Coming from NYC, one of my irrational peeves is men in sandals or barefoot when not at the beach. Every time I walk around SF I can't stop noticing slobby looking men with their toes on display. How hard is it to put on a nice pair of shoes?
If a Hacker News comment is not good enough to post with your regular account, it's probably not good enough to post at all. That's not always true, which is why we don't ban throwaways. But it is certainly true in this case.