you broke my grill posted:

this is what's fascinating about the story, and I've never heard anyone use the exact phrase "head had main character syndrome" but it fits so very well

and what makes it such an incredible coincidence and amazing random occurence of fate. imagine you had main character syndrome and one day you read in the newspaper that the president is driving right by your window at work and you already own the rifle and you want to be famous, how could you not act given such great circumstances?

I mean it just seems like the only reason he did it is "because he could" but people don't want to accept that as an answer. But it still seems like the most likely theory to me.