Being wreckless in your 20's..WHY?

I'm 20, and for some reason in todays world.I'm pretty much told that I'm suppose to spend the BULK of my 20's as some kind of club hopping, Binge drinking-alcohol filled, up, generic, womenizing narcissit. "Because thats living life to its fullest" as I'm suppose to believe. And if not living like this, I'm "wasting my youth" or "I'll regret it later" by a lot of peopels standards. WHY? why is this considered living life? why is this so glamorized?We over glamorize the glamour. Are we that generic of people? I have always found it so stupid that this is suppose to be the standard of my youth and fun in this day and age.And I'm suppose to be living up to it.I just think its so overrated.A good movie, a great CD and I'm happy.The media and this older generation make it sound soo down hill. Thought?