You spend ten years of your life being trained to do one thing, and you're being taught to think that it's the most serious thing that anyone could possibly do, and then suddenly you find yourself doing something that in some respects is the epitome of frivolity.
When you think of it, really there are four fundamental questions of life. You've asked them, I've asked them, every thinking person asks them. They boil down to this; origin, meaning, morality and destiny. 'How did I come into being? What brings life meaning? How do I know right from wrong? Where am I headed after I die?'