Wow. I didn't think that this question would end up in a flame war...
Let me rephrase my question.
Why would someone choose to use to a gated clip over a bolt clip given the risk (albeit minimal) in the first place? Is this a nimbleness or dexterity issue? Is the gated clip so much easier to use? Are the risks of line-snagging so low? I saw what can happen with these clips so I know that the danger is real. I'm amazed that people are so passionate about a simple clip. My logic was that bolt clips are as easy to use and don't involve any more risk than is necessary.
It appears as if the arguments offered FOR the use of this clip seem to come from the machismo "I've been diving for x number of years so don't tell me what to do" school of divers. And no more Ormsby please.