I have the same feeling: I explored every inch of the map with my starting samurai! After 90h i was burned out and most of the loot i found was useless for my char. Then i took a break for a week to finish it up. The moment to moment ganeplay and controls are sublime, the world atmosphere is great, but after all it was just: go somewhere to kill a boss, get useless loot, go somewhere else to fight sth.... Rinse and repeat. Explore to fight. Now after having 65h on totk, i must say the variety of Hyrule is on another level.