My experience with rules lawyers, especially on Internet messageboards, is primarily with people who insist on strict literalist reading of the rules and then deliberately misread those rules in support of either the most advantageous interpretation or the most perverse and nonsensical interpretation-- they are actively attempting to force the rules of the game into an unplayable state.
I think I am normally inclined to prefer rules-heavy games with lots of options, but watching the CO metagame and rules interpretation arguments over later editions of D&D is turning me into more and more of a fan of older, less precise games.