You are correct. A lot of bad shit happens all the time. It's unfortunately the way of the world. Guess what, when bad things happen, people remember and memorialize those events. Just like you should remember and be sad for all of your countrymen that got killed by us in the revolutionary war. I am assuming you are from the UK and apologize if I am wrong.
As an American I am not a large supporter of our global presence and willingness to butt in. I am a nationalist and prefer isolationism to a degree. But realize Mr. Wolverine, that we live in a global economy, and there is the UN and NATO and we are asked by many people for help. I HATE seeing our soldiers die for another country or for no Goddamn reason. It is senseless. World War II changed it all for us. It's unfortunate. It's also unfortunate that we are part of the UN.