Most people aren't vets, which is why they can still be enamored with war.
As for the danger of Islam, you must understand the difference between a formal call in their religion for world domination and an actual intention to do so. We Christians have a similar call to spread the Gospel (albeit by peaceful means) throughout the world. But very few Christians actually do anything about it. The same applies to Islam.
Furthermore, even if they had an intention to conquer the world, they do not have the capability. And once we exploit our own natural resources, they will go back to riding camels within a decade.