I've had my pistol permit for over 30 year and carried on and off since.
I was taking and instructing self defense classes about the same time. Many of those folks were LE, vets, pro athletes, business people and most carried. I began to shoot with them and really enjoyed it. It seemed like everyone had or got their permit, so I did too. Besides my mother was the signing County Judge's clerk and I got my permit in a couple of days.
Over the past 7-8 years as the climate of civility has changed (read "eroded") I carried more and more. Now I always carry, unless I know I'll be going to my son's school. I can still defend myself(as can my wife and both kids), but I'm not as quick and not as strong as I once was. I worry about defending them and frankly, myself too.
20 years ago if someone wanted to fight it was with fists in the parking lot or better yet, you settled over a beer and a game of pool in the bar without a punch being thrown. Now if you look at someone wrong you're likely to get a gun or knife pointed at you. We now have; violent home break-ins. car jackings, street muggings, you name it. I now firmly believe if you aren't proactive you're very likely to be a statistic.
Being able to defend yourself today means having a couple black belts, a gun, a knife, a bug, a big dog, good sneakers, a good lawyer and a helava lot of good luck!