Insulating your attic has many advantages; First, it will protect your attic from the growth of mold on wet wood and leakage of warm air from the inside of your house to the outside, therefore regulating desired temperature throughout your home. Do you get uninvited pollen, dust and insects in your home? Insulating your attic will take care of that, too.
Secondly, If you hate the distraction of noise from outside when you are trying to concentrate on something or simply spending time with your family, insulation will seal off and reduce noise from the outside. Even those irritating ice dams that form in winter will be a story of the past.