I decided to carry simply because I am a firearms enthusiast living in a state that allows it.
I find a lot of people who decide to carry after encountering some life altering event are not truly prepared to do so. Firstly deciding to CCW because something has happened to you is a reactionary measure. A lot of these people think buying and carrying a gun is the solution to their newly found problem (fear of assault, family safety, death).
These owners are often not "gun" people and furthermore lack the skills and experience needed to safely carry and use a firearm. Many of these types of people think simply showing or pointing their weapong will resolve a deadly situation in the favor. They are sorely mistaken.
If you decide to start carrying a gun because of a negative event you have witnessed and encountered, get the proper training, to include mental preparation for taking another human's life.