Other than what Zantai highlighted above me, I’m going to excavate and post another post/opinion of his that I think needs to be said as well:
Basically, once you’ve done finished the story/other secrets, hit max level, finished gathering secret skill/attribute points, 55 devotion points and have gathered the literal perfect set of gear for your character - it’s done, it’s perfect, you can either do what you’ve been doing for the hundreds of hours it has taken you to get there and keep playing the game or start over. The choice is yours.