I'm just aiming to feel like I've done all the exploring I want to do...which is usually a lot. I've done 2 of the divine beast missions, was about to get started on the third, when I got side-tracked exploring. Then, on my way back to the divine beast mission, got side-tracked from my side-track. I'm having fun, but sometimes the huge scope of the game means that not everybody will put in more than 100 hours. (and sometimes the huge scope means you can get intimidated!)
In that way, I think the game design is brilliant. You can put in as much time as you want, but still get the same overall game. In Skyrim, with the leveling of the bosses, I don't think players who put in 40 hours got anyway near the same game those who put in 100+ hours did.
The other thing to mention is, Nintendo basically designed a PC-esque game, for the first time I am aware of, and knocked it out of the park the first try. And no huge bugs....nothing like buying a Bethesda title day one, and feeling like I'm doing the bug testing...