I think it's silly when people refuse to play a game because they can't choose the gender of the main character. Personally, being a girl, I usually choose a female character if I'm given the option (with the sole exception of Morrowind, where I played a Kalam Mekhar clone as my head was swimming with Malazan awesomeness at the time). But I'm not going to avoid a game if it happens that I can only play a male character. If I did, I'd miss out on wonderful titles like Planescape: Torment and The Witcher (and Alpha Protocol, for that matter, which I quite enjoyed in spite of its issues). Yet I know people who have refused to play PS:T because they couldn't play a female Nameless One, TW because they couldn't play Geraltine, etc. I don't think it makes sense. It's about as daft to me as refusing to read a book because of the gender of the main character.
In terms of my own silly reasons for not playing games... I dunno - I tend not to go for anything outside of the RPG or strategy genres. But that's because I have limited gaming time and I only want to play games I know I'll like. (I'd only buy an average of, say, four games a year - not including gifts for friends.) I've even avoided buying games I'm fairly sure I'd like because I don't have time for them and I have no willpower (e.g. I still haven't played Oblivion because of how long it is - and I know I wouldn't be able to stop playing until I finished the main story). But I don't think that's super-silly, just a question of knowing myself.