I shoot because I simply love to do it.
It enables me to take a break from my normal work routine.
It trains me to see things which I normally ignore or too busy to look at.
My camera enables me to record important moments, when my brain unable to record them forever. The feeling of holding your DSLR up, look through the viewfinder, search for what you want, press, and the shutter sound told you that you have freeze that moment is simply good.