"Imagine there's no heaven
It's easy if you try
No hell below us
Above us only sky
Imagine all the people living for today
Imagine there's no countries
It isn't hard to do
Nothing to kill or die for
And no religion too
Imagine all the people living life in peace
- John Lennon"
Quote Source: YouTube Clip
It would be nice to imagine this , and maybe someday we can reach a point as humanity where we can rid the world of war. But to do this we will need to work on fulfilling the needs of humanity and even after that is done we will have to work on the comfort levels. basically Heaven is a nice place to dream of but in order to end wars and have peace we need to create heaven on earth.
Sadly, I thing even if we were able to achieve such a thing things would still happen from time to time that would disrupt the balance, thing like famine plague and other stuff beyond our control. nothing can last forever but it would be nice to have it for a day, even years or lifetimes. Religion does stand as a major obstacle in the way of making such a dream possible but not necessarily one of the hardest ones to overcome.