Scruples wrote:
The purpose of a camera’s battery grip is to weigh it down, you begin to have second thoughts about your hobby.
Seriously, the battery grip holds an additional battery. Therefore more photographs can be made. It will not increase the speed of the camera. You don’t switch out another battery prematurely.
Personally, I feel that a battery grip is to impress others that you have the largest camera around. In reality, NO!
I have a left hand that is only semi-operational. The grip is a great help when shooting vertical portraits, such as at a wedding.