Beyond that, I’m being forced to spend time figuring out how to play the game ‘properly’ rather than actually playing the game. Part of the problem with metagame for me is that it is, by definition, external to the game. So I end up having to look for FAQs, wikis, or even *shudder* official forums to even begin to figure out what I’m ‘supposed’ to be doing. And then, without fail, I learn that I chose the wrong class, hero, skill set, or whatever and I can either start over completely or bull on with the knowledge that I’m ‘doing it wrong’. At least if it’s a single-player game I can take comfort in playing the character I want to play even if it isn’t optimal. In a multi-player game there’s the added joy of other players more than happy to tell you that you’re stupid and wrong if you dare to step outside of the accepted orthodoxy.
My roots in tabletop role-playing, where metagaming has long been viewed negatively, may also enter into this. For me playing a game is about working within the bounds of the assumptions that are made by the system. Avoiding use of out-of-game knowledge as much as possible is part of this. If a game is well designed and things are messaged properly, I should be able to figure out everything I need to know to play well without having to resort to outside information.
Ultimately, the more time I’m having to spend playing the metagame instead of the actual game, the less I tend to enjoy myself. I want to do my learning as a part of playing, rather than as a prerequisite to even getting started.