I've recently made my peace with sleep. I used to resent it, and tried hard to avoid it. It seemed like a waste of time when I could be awake doing stuff. I couldn't fathom why anyone would go to bed at 11pm unless they had an early flight to catch.
Through reading neurology research papers I began to understand why we sleep, and what goes on in the brain. It turns out sleep is very productive thing to be doing.
With our eyes shut in the peace and quiet, our offline brain doesn't have to deal with distracting input and gets to work sifting through the previous days' events, consolidating them into memories.
Our brains busy themselves making connections between these new chunks of information, forming and strengthening neural networks as they create a cross-referenced library of knowledge.