There is just so much history and complexity around us, it is easy to keep oneself entertained by carefully studying the details of anything. There is a video from the onion that I like a lot: "Expert Wasted Entire Life Studying Anteaters", which pokes fun at experts that study a very narrow niche field. The video is a satire about how a person can spend a lifetime fascinated by details that to others might not even think about - the expert in the video is taking the view of an average external observer that does not really see the point. As Feynman says, Nature is beautiful along so many dimensions... It is possible to spend your life in amazement if you just look around and study :-)