Whilst the game world is the most detailed I have ever seen, and the story so well crafted it sucks you in...i do have some issues with it. The game is not always the most fun to play, the slow pace to get to/from quest areas does drag the game down. Is it less than a 5/5? Its hard to argue against it, even with the pacing issues. The game is just so well made you have to just appreciate the brilliance of Rockstars developers.
Even just for the brilliant visuals and the main characters excellent voice acting skills. Give this game a chance and you might just find yourself lost in the Wild West for many months to come.