I like to keep myself away from situations that require a weapon.
Obviously the best option is avoidance, this is true. Don't go to ATMs at 1am in the bad part of town... that kind of thing.
But consider some recent high profile events, and where they occurred.. hardy what you'd consider "bad" situations are they?
-An office Christmas party in the middle of the day, in a San Bernadino, CA business park.
-Going to the movies in Aurora, CO
-Just walking down the street in the middle of the day in Isla Vista, CA
-An evening shopping at the Crossroads Mall in St. Cloud MN.
-Walking between classes at Ohio State, or Umpqua Community College, or VA tech
Those are just off the top of my head... now consider that for every high profile attack like that, which are all over the national news, there are probably thousands of stories you don't hear about.
Peruse this for while, for just a few.
http://www.thetruthaboutguns.com/?s=defensive+gun+use+of+the+dayOf course NO ONE can say what difference (if any) would have been made if there was a good guy with a gun present at any of these events. But I believe that people have an unalienable right to self defense, and forcing them to be defenseless is immoral.
I'm not going to tell anyone to buy or carry a gun (certainly if you're not willing to learn how to use it and get training, and practice regularly I don't think you should) but I do believe every law abiding citizen should have be able to make that choice for themselves. I carry (when able, I cannot at work due to TSA restrictions at airports) a gun for the same reason I have a fire extinguisher at home, or home/auto/health insurance, or a first aid/trauma kit at home and in the vehicle, or food storage at home, or a 72hr kit in the vehicle. I hope I never have to use any of it, but I'm glad I have it. Not saying you should of course use a gun in every situation where you might. It's fight or flee right? Sometimes flee is the wiser choice, But it's nice to have a fight option available too.
The argument I always come back to is this:
When some kind of really bad attack is going on, what's the first thing people do? "Call the Police." Why? "Because they have guns and know how to use them." Hmmmm... what if you had a gun and knew how to use it? (same argument goes for trauma/first aid kits and training too.)