Imagine all the people

Interesting song I found by downloading.
Before, I never understood why John Lennon was so famous (other than being part of the Beatles) and why his death has caused the world to miss him so much.

Until I listened to this song:
Imagine by John Lennon

Imagine there's no heaven
It's easy of you try
No hell below us
Above us only sky

Imagine all the people
Livin' for today

Imagine there's no country
It isn't hard to do
Nothing to kill or die for
and no religion too

Imagine all the people
Livin' life peace

You may say I'm a dreamer
But I'm not the only one
I hope someday you'd join us
and the world would be as one

imagine no possessions
I wonder if you can
No need for greed or hunger
A brotherhood of man

Imagine all the people
Sharing all the world

You may say I'm a dreamer
But I'm not the only one
I hope someday you'd join us
and the world will live as one.

For some reason I found myself with tears in my eyes.
Maybe this is why Lennon was missed so much.
How will the world change if Lennon is alive?