I'm a big gaming slutI have an expansive and inclusive love of games. Other than sexually explicit games, I can't think of anything I wouldn't even play a one-shot of -- although I have much less love for highly simulationist games. Not my thing.
You mean like Batman?
Okay, honest question, going beyond the OP's question somewhat.
How do those statements above go together? Why is it that the tools of LARP are disqualified, but pretty much any other set of tools is okay?
By extension, why exclude any genre, style, or rule set that you've never tried before from consideration?
Is there a game, genre, setting, or character type that you will not play, at all? Is there a deal breaker game element (like the previously mentioned) that will make you consider walking away from the table if the DM was absolutely intent on playing it? (I am not talking about a DM/personal characteristic.)
Bullgrit
I could not sit down to enjoy Axis and Allies if I were forced to play the Axis; nor would I particularly enjoy playing the game against anyone who wasn't similarly resistant to playing the Axis.
The proportionate powers of the gecko. That would be so awesome! I'd love to be able to cling to things, have rubbery fingers, and be able to lick my own eyes. I may have my next superhero character for M&M.
Superheroes. I understand that there's at least one very well constructed supers game out there that is one of the flagship products of a publisher I like. I'm glad someone is doing it well and I wish them all the success in the world, but I've always thought the entire superhero concept is lame. I think superheroes is some sort of cultural outgrowth from Greek Mythology. The problem is that it was cool when it was Greek but not so cool once they started wearing tights. In my opinion, the superhero genre strips the accomplishments of these characters because they always had some special power that nobody else has to fall back on.
There are lots of categories of games on my list similar to other folks here-- the extremely obscene, the extremely goofy-- but only one that I can think of off the top of my head that I've ever specifically and consciously refused to play:
Axis and Allies.
I just find it ghoulish.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.