When you take a tree that is rooted in the ground, and transfer it from one place to another, the tree will no longer bear fruit. And if it does, the fruit will not be as good as it was in its original place. This is a rule of nature. I think if I had left my country, I would be the same as the tree.
In childhood, we yearn to be grown-ups. In old age, we yearn to be kids. It just seems that all would be wonderful if we didn't have to celebrate our birthdays in chronological order.