The rest of my family doesn’t go to bed until around midnight. The time they’re asleep – without all their arguing and asinine chittering and general noisemaking – is the only time of day where I feel I have some peace of mind. I take advantage of the tranquility by staying up 'til 3:00 or thereabouts.
I can sympathize. I did this a lot when I was in 8-12 grade just to get some peace.