What is, to you, the thing that makes Skyrim - well, Skyrim!

What makes Skyrim the game it is for you? And maybe why? As we all agree, this is of course the greatest game of all time (yes it is). But WHY is it? Why, after 13 years now, do we still play it so much, and love it like the day it came out? To me personally, I have no clue! The first time I played Skyrim was when I was 7-8, and I was enchanted. Maybe it is the shared hatred towards Nazeem? The love for the world? Or just that you are the hero? What makes Skyrim so magical?