Total peace might not appeal to an adventurous spirit. However, if you're talking about wars, I think they will come to an end. Moreover, I expect they'll be a thing of the past within a hundred years - maybe less.
But 'Total Peace?' That means your mind and everyone else's mind would have to be filled with this quality: no tiffs in the home, no arguments between neighbours, the end of all ego-wants and even ego-driven dreams and ambitions. I don't think we're going to see this sort of progress for centuries yet...but one never knows.
And yes, I am optimistic not pessimistic...I don't believe the World Media gives us even a balanced view of world events, let alone the real one.