I bet you saw tons more bugs than I did, considering I got the game at the very beginning of this year. The craziest glitch I encountered was when the game tried to load up a race, but instead loaded up what looked like an underwater test chamber; Geralt was swimming around without a breath limit. Also, my game has hard crashed at least 4 different times, which I've never experienced on console before (Skyrim froze on me a few times, which is basically the same thing). My PS4 is brand new, so I was wondering if anyone else with a console had their game crash multiple times as well.
According to a FAQ that I looked up today, I still have 30+ main quest missions to go. I'm almost level 21, so I'm powering through the main quest until I don't have to worry about getting less XP for being 5 levels over.
I may not be near the end, but The Witcher 3 is already my third favorite game of all time. Only God of War and Resident Evil 4 have a higher place in my heart (Metal Gear Solid 3: Subsistence and The Last of Us were bumped down). The combat is fantastic for an open world RPG, the entire game is stunningly beautiful, the story, script and voice acting are all superb (Dandelion sounds out of place at the beginning, but I read The Last Wish a few weeks ago, and I have to say that he is very faithful to the source material), and Gwent is super addictive (I did have to put the difficulty down to normal though, on account of too many merchants having decks stacked with hero cards). CDPR has truly created a masterpiece. I wouldn't say The Witcher 3 is a better game than Skyrim, but it is most definitely more to my liking. Gameplay, graphics and story are what I value most in a game, and The Witcher 3 blows Skyrim out of the water when it comes to gameplay and story (graphics obviously can't be compared). Skyrim does allow more freedom in countless ways, so it's like comparing granny smith apples and Fiji apples.
As far as negatives go, there are quite a few; which is to be expected in such a massive game. They are all quite minor, to be sure. I already mentioned some of the bugs I've seen, and there's also pop in, Geralt can be an ass when trying to situate him so that you can pick stuff up, Roach likes to run away as you're about to mount him, and loves to start running along roads even when you're clearly just trying to cross, somber story moments sometimes have inappropriate music playing in the background, the game likes to change the weapons and armor you have equipped every so often (I was oddly pantsless for one clandestine conversation) and you have to pick what abilities you have active.
TLDR; The Witcher 3 is absolutely amazing, and to quote Angry Joe, worth every penny of it's purchase price. I can't wait to play the expansion packs once I'm done with the main game (and get rid of some of my back log). I had some spoilers that I wanted to talk about, but I'll save that for another post.