Our military kills innocent people in the middle east all day long, and then we get pissed then they bomb us.
Maybe if we just left the middle east, the terrorist organizations would lose support and fresh recruits to organizations that aren't hell bent on destroying a country on the other side of the world that should be irrelevant to them.
You can take your question and shove it up your ass. Bombing ISIS just gives them more support. It's easy to convince the brother of a dismembered Muslim that America is the Great Satan, and that's exactly what ISIS does.