I haven't changed. I really think you are responding to increased publicity of the events. Whether one or a dozen victims, the situation does not change in my mind. The publicity elicits from me a reminder to myself to be aware of my surroundings.
To the anti gun crowd it is an opportunity to push for more gun control. To us it is increased awareness. To gun stores it is increased sales to those of us who react by buying a new gun.
C'est la vie.
Cogito, ergo armatum sum