Ask HN: Why is one downvoted for sarcasm
...when sarcasm is the most refined form of humor?
Also, sarcasm by its ambiguity requires people to shift gears from a straight interpretation of someone's post, to one in which various kinds of verbal trickery is intended. It just seems like too much work if a straight presentation would convey the meaning more efficiently.
Although when they are funny, I usually upvote them.
2. Humor for its own sake is less valuable than humor that makes a point. I wish I could find it, but I read an interview with the New Yorker's cartoon editor who said something similar.
3. It is easy to tear down with sarcasm but very hard to build with it. There is too much negativity in anonymous / pseudonymous forums in general.