Guns are likely already there; the professors just don't know it.

The other day during the Oregon search for the highly dangerous escaped mental patient, the media was interviewing neighbors but how they were handling the crisis and one fellow said "It's very scary. I'm worried about my kids. I slept with my gun loaded on the night stand last night."

And right there is one of many examples of why guns are necessary. The cops can't be everywhere and the world is a dangerous place. Rural Oregon is usually pretty safe EXCEPT when it isn't. Had the escapee (who was locked up for knifing a woman and stabbing her 27 times) shown up at that household, at least they would have had some chance to defend themselves. Otherwise, that father might have been forced to stand by helplessly while his wife or children were killed.

I carry a gun because a cop won't fit under my arm and sometimes the world is a dangerous place ... even when we don't know that it is.