What is wrong with people?

This is more of a WTF than a question.

Everyday I notice how angry people are wherever I go. Not angry at me, they just seem angry at the world.
Today, I wasn't having the best day and went to do a few errands this afternoon. I was parked on the street and was getting my son out of the back seat. The "women" in the car next to me came back and opened her door straight into me quite hard. I naturally turned around to see what was going on when they then hopped in the car and started reversing swerving straight into me. I was in disbelief enough when the drive wound down the window and started abusing me for a)looking at her b) being a fat ugly bitch c) having a child when clearly no-one would want to f%$k me d) because she was sick to death of having to look at people like me when she went out.
I could not believe what I was hearing and seeing and my son was terrified. We didn't say a thing and as she drove off I just burst into tears along with my son. People were stopped on the street watching this all unfold and not one person said a thing.
I just don't understand what has gone so wrong with society.
I don't understand what someone would get out of this type of attack.

I guess I just want all of you lovely IM's to stop and think next time someone annoys you in some way and think for a minute before you speak. If we could all do or say something to make someone smile each day how much better society would be. After all, you never know the impact you have on someones life.