I like playing wizards, sorcerers and the like. Magical characters and spells are simply my favorite aspect of fantasy. Now, I will gladly play a game where magic doesn't exist in the setting, like a modern counter-terrorism game or a sci-fi game. I'll even play a game where magic exists, but simply isn't the point, like Call of Cthulu (though expect me to be the first one to die/go mad the second his character gets his hands on a spellbook).
But I hate playing in a high-fantasy game where magic exists, but simply isn't available to players. Or where players are punished unduly for choosing to play magical characters. So swords and sorcery really isn't my style, and I'll avoid playing 'mundane' or 'martial' characters whenever I can. This may be a major reason why I didn't click with D&D 3e. DMs had to keep wizards on a short leash, especially at higher levels, so they generally opted to keep a campaign in the lower levels. And, at level 1, magic-users tended to be crossbow-wielding peasants that could summon some shiny lights twice a day. And then die from a kobold nut-shot.
Otherwise, I'll attempt pretty much everything, except for the comically horrible, like FATAL. I often find that I'm intrigued by various settings or styles, like Paranoia or All Flesh Must Be Eaten, but put off by the mechanics. If I had a good DM to ease me through the (in my opinion) unnecesarrily complicated bits, I'd gladly try almost anything.
But chances are I'd rather be blasting stuff as a wizard.
