As you age, many of life's experiences will become familiar, simply because you will have already had a lot of them, so you'll get better at predicting what's next. This is good for your lizard brain--the one that is always looking out for dangers and surprises--but it sucks for the rest of you because it makes time "go by" faster (blame your brain). Days turn into months, months turn into years, and next thing you know you'll wonder where it all went.
In order to "slow down" time and squeeze as many enjoyable moments out of it, you need new. New moments, new info, new learnings. It's the cure for this awful speedup, and Millennials have it in heaps. We are well known for our vast curiosity about the world, and our experience-focused philosophy on life. We don't care about getting stuff, like nice houses, or shiny new cars, as much as previous generations. We would much rather get more education, more experiences, and, frankly, more newness.
Your interest in the lifecycle of a star, your Burning Man ritual, and your constant search for the best grilled cheese are all helping you connect to your day in fulfilling ways. Your thirst for newness is not something to dismiss (or worse, be ashamed of, because some call you 'flaky' or 'ADD'), but embrace, because it makes you happy. It's a gift. It's actually helping you live a truly long and fulfilling life.
And this is just another reason why being a nerd is the bee's knees.