I can see some validity, to some points, on the "other" side (not that I see people who have different opinions as "other" people). Look, I don't think that anyone in this thread seems like they're irresponsible about gun ownership. I just feel like there's way too much access for mentally disturbed people to own guns, and a little better regulation would probably help to lower crime-rates.
But as for the protecting us from our Govt... They've got some stuff (for lack of a better word) that probably trumps any civilians arsenal, and I think it's a little overly-imaginative to think that we're going to someday overthrow our Govt.
As for the cars and drunk driving analogy. It seems a lot harder to get a vehicle than a gun, and I also feel like drinking and driving is an under punished crime. As well as the fact that drinking is not only legal, but heavily promoted, while Marijuana is still illegal (not the discussion, I know. And I don't use Marijuana or alcohol). Just showing the hypocrisy of some of our laws. We can go to war before we can buy an alcoholic beverage, and we can drink and drive before we can smoke a joint on our own property.