Another problem with US military intervention is that we can no longer trust our government. The old jokes about dishonest politicians reflect an inbred distrust of government with many, but when it comes to military action the concern rises high above a joke about a double-dealing congress person.
From Reagan to Clinton to Bush to Obama, presidents and administrations and congress have lied about our military actions -- however, as the Information Age gains speed, the lies are revealed quicker and more comprehensively, when the media is doing its job. For all we know there may be an agreement with Qaddafi for some political motive, and in the next few days he makes a deal which solves all the problems --we just don't know, because no one will tell the truth. But even if he goes, what then? What is the plan and why did we really attack in the first place? Whatever it is, it will be revealed, so the lies are becoming insulting.
When government loses credibility it makes it difficult to support military action. Politics have poisoned every aspect of the State, especially international interactions. This is why Jefferson originally promoted a non-intervention policy regarding foreign relations -- his first instincts were right.