It strikes me often, though, that the gratitude I feel upon finishing a seven- or eight-hour snooze ought to carry over to the four- or five-hour variety, as well. After all, I usually drift back, and when I don't, there is always something relaxing I can do: read or write or pick up a dream thread and follow it back to its source.
William Arthur Dunkerley said it best: "Thank God for sleep! And when you cannot sleep, still thank him that you live to lie awake!"