Where are they?

Where are those people,
who perform very well in the class.
They have gone,
I used to think they are back to normal people.
Now that I grow up,
I believe they are hiding.
Hiding in the city,
Enjoying the planet,
the nature, the city,
food, drink, music.
The world is huge,
and is huge enough to accommodate all of us.
Fate,
When you think something exciting,
You won't bother wasting your life in it.