Originally Posted by cheebahmunkey
I thought about that but I've heard horror stories about drivers hitting cyclists (sometimes on purpose) when they use the entire lane.
You're more likely to get run down from behind if you are too far to the right on a narrow road. You don't leave yourself room to maneuver safely around obsticles and cars try to pass you too close or with insufficient forward visibility (around a bend, over a hill, etc.).