When the world was problem proof. As you and me, as human beings have both bad and good aspects; the world, a sort of the gross manifestation of these two aspects, cannot be with all good. Right from the dawn of human civilization, there has been no absolute peace. The struggle for survival transformed into war for power and so on and so forth. So, they might seem overwhelming, but they are not unnatural. So I guess we should pick up the attitude within ourselves to practise good and shrink bad and pass it on and over.