I would love to be 16 years old again. There are so many mistakes I wouldn't do again. Meanwhile that's all the mistake I did that makes me "wiser" concerning decisions today...
It's great to be young, and for many reasons.
It's great aswell to be a bit older with some experience, for many reasons also.
Each flight hour you have in your logbook is somewhat bad news, because all this experince brings you closer to your death.
Let's enjoy what we are, whatever our age, and let's try not to behave like experienced individuals (giving advices is part of this behaviour) when we have no experience. There is a time for everything, and no willing in the world can change the clock.