Existence

Na tha kuch to Khuda tha na hota kuch to Khuda hota....
Duboya mujhko hone ne, naa hota main to kya hota....
[Ghalib]

This is what one starts thinking when he is filled with dismay or when he feels that his life is completely empty. The very reason of his existence! What difference does his existence make? Ghalib again describes it in simple words. Really awesome!