From: http://meta.stackexchange.com/questions/133552/should-i-answer-off-topic-questions

[Accepted Answer][1]: "Generally speaking, answering questions that should get closed encourages bad behavior."

From: http://meta.stackexchange.com/questions/200112/is-it-bad-to-answer-off-topic-questions-knowing-they-are-off-topic

[Accepted Answer][2]: "Yes, it is bad to answer off-topic questions. What on earth is the point of defining them as off-topic if you're going to answer them anyway?"

  [1]: http://meta.stackexchange.com/a/133555/174452
  [2]: http://meta.stackexchange.com/a/200116/174452