For me its part of the spiritual ritual. I love to do things myself to enhance my smoking, so everytime i smoke i make a gravity bong or a parachute, and then i grind the weed in my molcajete (its a small one, not the big ass black stone folklorical molcajetes). Cleaning the weed while listening to some hipnotic tunes always gives me a calm feeling that enhances the joy of pot. Also it burns better if grinded.