Wow, I guess I don't belong here, and I'll probably get chewed on but I will still add my 2 cents because I teach college. I've been held up, I've been shot at in the line of my job, I can carried concealed, and I can handle a shotgun.
I CAN carry concealed, but I don't. Everyone who says that everyone has the right to own a gun is correct, BUT, it should NOT be an easy thing to do. College students, full of raging adolescent hormones and often drinking to excess for the first times in their lives are the last people on the planet that should be armed. They get really wound up and they blow up at teachers over grades, they blow up at each other over girlfriends and sporting events. The next day they are chagrined and embarrassed. Embarrassed beats the hell out of dead or imprisoned for murder.
Banning weapons or allowing weapons isn't really the issue. Look at Canada: more weapons per household than we have here, but FAR fewer homicides. WHY? Because weapons are for hunting NOT for protection.
I believe the 2nd amendment was written to allow the citizenry to overthrow the government and repel invaders as the first post here said. Generally speaking, handguns aren't what is used in those activities. (Don't jump all over me, I said generally, I know I carried one too.)
It's not just our laws about guns that need to be changed, it is our whole way of dealing with them. Criminals DON"T care, that would be part of them being criminal, but there is a whole category of middle men who supply them, who are NOT considered criminal. The NRA treats it like a macho cold dead hand thing instead of as a tool. A weapon is a tool. We keep alcohol from people who we allow to go to war with weapons, we prevent people from driving more often than we prevent them from having a gun. If you believe the 2nd amendment is about owning a weapon to hunt, protect yourself (I have a problem with this but I'll go with it,) or repel invaders, then you should not have a problem with extended waiting periods. If we're being invaded we can suspend them, if you are planning a revolution plan ahead. Waiting periods should only inconvenience some and can stop others who are not people who should be armed.....
Common sense is simply not common.