If it were for DSHnD or one of my other scheduled works in progress, I'd probably push through. But it's for this odd plot bunny that I'm not even sure is going to coalesce into a workable story. So that leaves open the question of whether it's even worth the effort to stay awake.
Of course, if I'm too sleepy to come up with a sensible way to end this LJ entry, fiction is probably beyond me. For tonight, that may be my answer.