For me it goes like this. Purpose: To take part in providing food for the table. This goes back to the very first cultures in the world. Women gathered and men hunted, I'm sure some flip flopping occured when the roles were reversed.
Why?: I hunt to get away from a world diluted by man's own creation. I'd rather see the world as God made it, out in nature. I've been able to get more contentment in a tree stand than from a news stand. I also love to watch my dogs work. It pleases me.

Other benefits: seeing the circle of life and establishing your place.