It's Not The End Of The World?

Why?
When you fall asleep
Before the end of the day
You start to worry
Like when the taxi comes
To take you away
When you're in no hurry
Yet as our hair turns white
All the stars still shine
So bright above
At least
It's not the end of the world
Why?
We could live it large
Because we're only old once
Let's make a difference
Turn all the hate in the world
Into a mocking bird
Make it fly away
Yet as our hair turns grey
Everything is far
From A. O.K
At least it's not the end of the world