I really wish I was younger. If you are younger you have all the time of this world.
You have time to improve your self, you have loosed spirit. Yes, older ones have their things, they have experience, they have knowledge, but everything is easier when you are young :) If you make mistake, it is easily forgotten then when you are older.
But I remember some words I red somewhere, Somebody carries memories from childhood and somebody carry childhood sparkle i their eyes, childhood spirit and hope.