radiolab (part of nyc's public radio) had a great news piece about this very topic. Back during the cold war like 1 in 3 people thought war was inevitable. It says a lot about our culture that 1 in 10 think that we can achieve PEACE. 66% peace lovers to 10% is pretty sad.
Wanting peace and thinking we will get peace are 2 different things aren't they? I want peace, but I'm not so naive to think that humans will change their nature and we'll get it, so do I show up as a peace lover or not?
According to the question ask "do you think war is inevitable?" you'd be included in 9 of 10 think war is inevitable. What we want was not part of the question (and I don't think it is on peace.facebook.com either. Their question is "is world peace possible?", based on your response above your answer to facebook would be "no").
Great listen if you have an hour commute: http://blogs.wnyc.org/radiolab/2009/10/19/new-normal/