Well, it's a personal opinion, I know a lot of people love/like the game. For me, it was almost unplayable. It was bugged as hell (and an awful lot of them made me quit the game several times), gameplay is as shitty as it could be, the world is samey, I was really tired of going through the exact same snow scenarios (cities were cool though).... The best thing about it was probably that you had a lot of freedom. But that doesn't justify the rest. If there's something I hate about games is being unpolished. I'd expect more from a company like Bethesda. And I suppose that the game is now not bugged, but I played it day one and it was a living hell.
I must admit, when the game first released, it was definitely rough. I did not understand the critical acclaim. If it launched in the state that the game is in now, the high acclaim would be justifiable. However, like you said, the game was incredibly unpolished and glitchy at launch.
Games and debauchery.