I try to play a little of everything, though some stuff just doesn't appeal at all (magical naturey classes like druids, for example). I tend away from the complex caster classes like the classic spellbook wizard and towards spontaneous casters (I loved the favored soul and warmage in 3e). But after all's said and done I had to choose fighter. I love playing a totally non-magical character, a guy whose only defense against the insane challenges life throws at him is a sword, a shield, and the strength of his arm. I like my characters like Strider before he becomes Aragorn-- hard-bitten, hard-working, and just a little bit tired. (Yeah, I know Strider is very much a ranger, but bear with me-- I'm just talkin' feel.) I prefer gritty-style to epic-style play anyway, and I think this is best captured in the fighter.
That being said, I'd go back to playing rogues all the time if they were more skill-monkey like they used to be. Also, someday I'd love to build a fighter for whom neither Int nor Cha is a dump stat. I'd love to play the progression from Strider to Aragorn, and I'd love to have a character with the smarts and personal skills to show that.