That's why I love the state of Indiana. I carry a pistol with me daily. If I'm ever forced to use it the law is on my side.
In terms of fights going to the ground. I have a feeling that the popularity of MMA is going to cause most 'thugs' to start to adapt mock styles of MMA fighting. They see it as cool and powerful and will emulate it. I've seen this happen in my real life. I ran a small mma club at a college and we would get all kinds of 'street fighters' who wanted to train. They had watched TUF and emulated the lingo and style of what was seen there. While some were tough, all did not have real training, but none the less they still attempted double legs, chokes and armbars. Also, in this area wrestling is very popular. So many of this new breed of kid is all about using wrestling to sit on your chest and pound your face in.
The truth though is that I'm in my 30's now. They only fist fight I'm going to get into is on the mat. In 'real life' if it reaches that point I'm in fear for my life and several things have gone really wrong. And that is why I carry a firearm.
I suppose if you carry a gun you would likely never have to fight. You'd always be able to deter your opponent, or if that fails, shoot him dead. But say it's a drunk fan at a ballgame accosting you, and you either don't have your gun on you, or you don't want to risk accidentally hitting other fans with gunfire. Situations like that may require you to fight someone without a weapon of any sort. It's all hypothetical, but certainly possible.