The only way we can really and truly appreciate joy, love, happiness--any of it, is to know the meaning of it. The only way to know the meaning of it is to fight for it. If that means fighting our way up from nothing or if it means getting past an argument, we know what it means to feel those things. To feel nothing at all... I'd say I can't imagine how sad that would be, but then you wouldn't know "sadness", would you? But it's still so sad. To be that empty. Drifting. We exist to feel and experience, so without that... wouldn't life be all but meaningless?