I choose Skyrim.
I love exploration and doing what I want, going blind into skyrim felt amazing, it has a lot of small things I found out and enjoyed.
Meeting a giant for the first time who one hits you to death and let you fly all the way to Black Marsh, find a cave that leads to a Dwemer cave that ends up in blackreach and then finally find out you spend 6 hours today in one cave. Make a house, get married and have children. Find a blind bandit who reads a book, steal the book and find out that their is no word written in the book it is all optional but only adds more value to the experience.
The story can be described as boring but their is so much lore and so many books to read it all depends on your choice and I prefer it instead of following a long story that I hardly enjoy.
Sure the civil war can be dissapointing and I enjoy when people who played the game for hundred of hours find out that a Truce was also possible
Sure the games after daggerfall became more simple but I am fine with it.
A game like Daggerfall with the graphics/gameplay of today seems impossible.
Daggerfall was to hardcore for me, accepting a quest to bring a potion to a sick person and failing it because you explored some caves/villages and the person died from his sickness is rather annoying.