Obama wanted to be "the president". Ya know, the big guy that get's to call all the shots. The guy that get's to make his buddies kings, or at least barons and dukes. The guy that gets to live "the life" state dinners, free broadway tickets, travel away from all the peons in "his" country.
He isn't, and never has been, big on the idea of being President of the United States, CEO of one of the largest corporations in the world. Charged with protecting not only the citizens of his own country but de facto most of the citizens in the free world. He may like the idea of being the head of the corporation in the US with a monopoly on the use of force.
It is no surprise then, that he would have no respect for those that have died in defense of it and it's ideals.