You should have acted. They're already here. The Elder Scrolls told of their return. Their defeat was merely delay until the time after Oblivion opened, when the sons of Skyrim would spill their own blood. But... there is one they fear. In their tongue he is Dovahkiin; Dragon Born!
This is the game of my life, basically. The game I'll never get tired of playing because it feels like home in a weird way. I reckon it has a few flaws but then again, no game ever made was entirely perfect. Skyrim, compared to the games before it, is a very dense videogame, lore and gameplay-wise. It could have been better explored but then it would please only those who have played the games before and no "newbies" to the gender. Sometimes it feels impersonal, but it's up to you (and sometimes the modding community) to fill the gaps in the story, provoking your RPG instincts.
For me it's a very fun game, probably my favourite of all time.