again, how did this come from that song?

Sadness is necessary, disease is the earth's natural process of thinning out the numbers, I get you there. You may see it and think of greatness. I see it as a world where everyone can put aside differences and live as one. The three verses are the three biggest reasons people go to war, or have any sort of problems at all. Religion, nations, and posessions. Utopia, my friend, not grey.