Well I'm not going to reply with insults such as "you've lost all credibility" etc. because I believe everyone is entitled to exactly what you said, an "opinion". I personally found the game fun as I am a big fan of stealth games, including the Splinter Cell series. And the fact that MGS:Substance/Sons Of Liberty sold over 14 million copies worldwide, means that a lot of people in the gaming world, some of whom would have more gaming knowledge and experience as you, must have no credibility whatsoever and shouldn't be allowed to express their, here comes the magic word again, "opinion".