According to Obama, he went in because he refused to wait for images of mass graves. Other things he refused to wait for were basic intelligence, stated objectives and congressional approval
The Libyan war may be dumbest war we have ever stumbled into. It is a war where the Secretary of Defense has admitted we have no national interest, a war where we don't know on whose behalf we're fighting or why we're even there. A war that the White House did not bother to run by either congress or the American people, except after the fact. A war that appears to be fought at the behest England, France, their oil companies, and a motley collection of Libyan rebels ranging from former regime thugs to Al Qaeda.