Originally Posted by
Avalon_Albrook
While I can't argue that mentality, we're talking about failsafes here. Marking a sleeping target so that I know to avoid hitting it for the time being can and does help if it's a busy moment, lots of crap is going down everywhere, and you just don't happen to catch the sound of the sleep spell and you can't see the small sleep bubbles. If you end up in a rhythm of rotating while pulling aggro, it can be easy to miss even for the best of people. Nothing wrong with a mark there as a failsafe.