We're over "there" for no one reason alone. We can't let chaos, tyranny & totalitarian governments control vital regions or interests. We can't let these goverments run wild over other nations or democracies that are vital to our interests. Before WWII, America was sick of WW I, so we stayed far away from the world "arena". The result - 90,000,000 (90 million) people killed (directly or indirectly) in WWII. Before 9/11 too; the result, a 10 year war so far. No, we can't keep our head in the sand while the world self destructs around us.