It's funny how we all have different ways to play. I am probably like Thalius, I NEVER sleep. I plan my day to be mostly outside on daytime, gathering, hunting, exploring, mining, feeding animals, visiting traders, and indoor on night time. There is so much to do (leather, cooking, bakering, bricks, glass, casting, smithing ... and when I have some spare time, panning till the dawn). Even in the early days of the game, in a 2x3 burrow, I manage to have sufficient stone spears, and kill drifters through a "window".