Riddle. As usual, I've slipped into some kind of ye olde dreamspeech. But whatever, you love it. xD

You sleep in lands of darkened sky;
a home away from home.
You hide from fools and demons
in places which they roam.

Outside are those who use you,
those ignorant monsters and mice.
But we looked closer and we did see
one minute piece of Taoist vice.

I hope that it's not too vague. I don't think it is, but I would say that as I wrote the bloody thing.