Insulation

Ever notice how angry and excitable people can be? Or how so many people say things in some company that they would rarely or never say to or about the person/people about which they speak? This is especially noticeable with many people around election time, but that situation is more of an outlier to relative to the sensation being described here. The general symptoms include things such as railing against the problems of "other people" with no regard for how they themselves might be part of the problem, screaming at people in the car because traffic is stopped, etc.

A theory on one potential cause: many Americans live in a constant state of background noise with very little real interaction. Wake up in the morning at your own home, get in your car with your coffee, go to work and never really interact with another person or face or own humanity.
We are all too busy to get out of our protective forts or home, automobile and building that we miss so much. Please don't miss what's going on all around you.

Go for a walk. Go to the park. Turn off your cell phone for a while, and realize your body is a soft, breakable shell.