Why are Americans more willing to engage in a war than to undertake real actions to make us secure?

I feel that the "war on terrorism" has actually made us less secure. As alternatives, what about figuring out why so many hate us around the world and actually addressing whatever legitimate concerns there may be? What about withdrawing completely any support for an Israel unwilling to make peace with her neighbors? What about a conservation and alternative source energy policy that makes the U.S. much less interested in and dependent on foreign oil? What about banning all sales of weapons and defense technology by U.S. based and protected corporations except to the U.S. military? What about ending U.S. hegemony as our principal foreign policy - after all, we essentially created Saddam Hussein didn't we? What about ending mive agriculture subsidies so that others around the world can make a living farming and develop their agricultural economies? You get the idea. We seem more willing to send our sons and daughters to war than to actually do anything positive.