There will never be a time of complete peace and happiness. Since youre so enlightened I thought you would have realised "the balance". For every action there is an equal or opposite reaction, this works both materialistically and spirtually. There are too many perspectives in the world for there to be an equilibrium (and therefor peace). What we consider peace now may be a mild war in the future, it all depends on perspective. If a civilisation is used to a world with no wars than minor things may seem trivial. Works as a balance