It is so frustrating to be searching for a problem, find a possible answer on Stack Overflow, and click on it to find out that the only answer was some douche bag explaining to the poster how their question is irrelevant or explain how much more they know. Either answer the question or help them politely.

Case In Point:
Q:
"Is there a ____ library that does _____?

A:
"Why would you want to do that? There are far better ways."

Either provide the "ways" or shut up.