Why Colorado?

The Denver Post featured an article on page one of its Sunday edition by someone named 
William Porter. He was asking, "Why Colorado?" He pointed out that there have been three successful attempts at mass murder or massacres in thirteen years, and at least one other that was not successful.

We in Colorado have incredible natural beauty to look at every day, with abundant sunshine. We don't feel the need to constantly look over our shoulders to see what danger lurks, as we would if we were in places like New York City or Washington D.C.. We are not expecting it. I would be, though, if I were in Chicago or New York.

Porter's article is here: http://www.denverpost.com/lifestyles/ci_21129878/wake-another-mass-shooting-question-why-colorado