Interesting quote from Tycho (of Penny Arcade):
Generally, I prefer turn-based games to real-time for the same reason I prefer writing to speech. [Gears of War, Ping-Pong, etc.] require the cultivation of a “Now Mind,” a highly reactive awareness that I’m never called on to posses. My role in multiplayer shooters is typically to absorb bullets intended for my teammates.
(Link: Penny Arcade)
I tend to prefer turn-based games over real-time games as well. Though, it’s not that I’m bad at real-time games. It’s that I dislike the frantic pace and reactive / instinctual / knee-jerk method of play required by real-time strategy games, as opposed to the more thoughtful planning of turn-based games.