Some.peole are nocturnal I guess. I was the same way until recently. But I'm the same way with the rain. LOVE the rain, I got out of my friends car two days ago and it just absolutely started to bucket it down with rain and I burst out laughing and was almost in a euphoric state. I guess some people just like things most people don't like. We're called pariahs :)
sleep endorfens(hell i don't know)
A tragic confluence of natural rhythms that results in a near hysterical high just as the body begins its transition to rest/sleep. I have it, too. It really wrecks a day sometimes.