Well we are not directly involved in all the wars. For instance I want to be bullish on Nigeria but Boko Haram is a real problem. Also the Ukraine is out of our hands, no way we could fight the Russians on their own turf. Certainly nobody in Europe has the balls to do anything about it since Russia might quit sending them methane.
Even when you look at the terrorism issue I think Europe is much more vulnerable than the US. The US is by no means perfect but Muslims come here and get jobs and own businesses and they don't drink and their kids don't fk up cars at the mall. If you want to wear a Burka or some other kind of headscarf we don't give you trouble, we have the first Amendment because we know how much trouble an "established religion" caused in England.
In France and other euro countries they warehouse Muslims in Big Block apartments out of some Le Corbusier nightmare on the edge of town (where euro people don't want to live) and they live off welfare and it takes hours and hours to get anywhere on public transit. Muslims there have grievances that go far beyond the indignities of being dissed in comic strips. On the other hand I am personally pissed at the Boston Bombers because we gave them a safe place to live where nobody wants to kill you because you are a Chechen. (We do have idiots in the US who attach Sikhs because they hate Muslims or attack Iranians because they hate Iraqis, but this is really a lunatic fringe.)
When CNN is not talking about war it is talking about some plane that disappeared or how the daughter of somebody famous was drowned in a bathtub or how the Republicans and Democrats can't agree on the budget (i.e. fund Homeland Security so we can avoid the kind of attacks that hit the Euro zone, fund NASA so we can get astronauts home from the ISS...)