I believe acting is very physical, and when you have to fight or do those kinds of things, it takes a lot of respect not to allow yourself to go off and hurt yourself or someone else.
But I really believe it is in America's interest as well as that of the free world more generally to stop Iran from getting its hands on nuclear weapons. This regime has threatened to wipe Israel off the map and bring about a world without America, and either of those is a really bad prospect.