A good example of why children shouldn't be given the right to make their own big decisions too early in life.
This is true, although in some culture, age is relative to maturity, I still feel that being experienced in life is when a young person should take life-changing decisions and not really due to their age. I have learnt a lot from this.
I mean you're right, age is just a number. Some might have experiences at a young age, even a child age that eclipse the experiences of fully grown adults.
But at the same time, I also believe that there is a line to be drawn somewhere that no matter how much maturity you might have for your age, it still isn't enough perspective to make the better, more informed decisions someone a bit older with more bruised life experience would.