Sleep!! What is Sleep?

Do you ever miss that sleep you got when you were a child? You know the kind where when your head hits the pillow you are off in lala land and you dont wake up at all till the sun comes up.Then you get up and you feel so well rested? Man do I miss those days!!!! Why is it that the older you get the less you sleep? That is my favorite thing to do. I cant explain it but I love to sleep i just miss that good deep sleep i use to get. Now I cant make it threw a night with out waking up 3 or 4 times.