My biggest regret as a gamer is my tendency to always try to see what others see as positive in a game. While this sounds like a nice thing to do, it begins to become a frustrating mess when no matter how hard I try, I can't see what is good about a game getting 70+ on Metacritic.
For example, Driver: San Francisco, a game that has gotten a 78 on Metacritic and got a 8.0 from Gamespot (getting the Great Sequel, Oh Snap!, Solid Extras and Unique awards). I can't help but be under the impression that other people seem to be playing a game completely different to the demo I tried. When I'm saying completely different, I mean Bulletstorm and Max Payne different. The demo I tried was filled with generic game-play with a mechanic that is borrowed from a FPS shooter that flopped hard (Jericho). The single player was a collection of clichés and generally poor gameplay, while multi-player was a lesson of how to make a poor multi-player mode.
It gets worse as I buy games that I see as naff just because loads of people love it, thinking that it gets much better since others love it so much. One good example is The Witcher, a game people praise as being fantastic. A game that I don't see the hype at all with a generic "save the world!" plot, with a main character with so much brood that it seemed to of consumed any other part of a personality he could have. Every other character in the game seemed to be part of a sick joke to make Geralt seem like the Sean Connery, while they secretly snigger behind his back on the account of Geralt being as charismatic as a tramp having a stroke. The game-play was dull with controlling him feel as smooth as operating a tank. I seriously bought the first and second Witcher games, assuming I'd like it since it's well praised, especially for it's story (which I find incredibly important in a game), only to seemingly missed the punchline called the hype.