Beat main quest, only took me a week of no lifing. Unlike other RPG's where I might want to replay and make different choices, fuck that. main quest was so damn long, great but long. and theres so much side content to do instead.
infact its hard to judge, since line between side and main quests is blurred, but I really think witcher 3 might be the longest game storyline I've seen in a game. witcher 3 is definitely not a perfect game, but I seriously can't wrap my head around the quantity + quality of the content, its unmatched.