I never completed the main quest before I had had my fill of the game. I put about 60 hours into it, and by the end my character was so strong that using my regular weapons got boring. I started using destruction magic at level 55, and it took lots of hits to kill enemies. Walking around in full daedric armor with two enchantments on every piece, however, made it so that enemies could barely ding me and using destruction magic didn't take away anything from my magic meter. I was a beast.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell