I'm in my mid fifties and the more training and experience I get the less I concern myself with asthetics or caliber. I used to be one of those "never carry any caliber that doesn't start with a .4." Guys. Then I started to read the findings of people with orders of magnitude more knowledge and far better credentials than I have. People like Dr. Martin Fackler and Dr. Gary Roberts and Dr. Sydney Vail all of whom agree there's no significant difference in the performance characteristics of the three main service calibers. Every single time I've had the chance to get actual, professional instruction I have found a way to simplify the process. After having to defend myself with a handgun a very few times I've realized if (God forbid) I ever have to do that again I want to process as simple as I can get it. That's one of the primary reasons I don't have a "carry rotation". I started out on 1911s, the very first handgun I had any real exposure to was an M1911 in the Army. I thought a 1911 was everything a handgun was supposed to be and when I got out of the Army my "collection" of handguns was heavy on 1911s. Then I got serious about carrying a gun for self defense. When I started looking for what would actually be a good gun for carry I honestly evaluated my 1911s and realized it's not a practical design. I mean there's a reason a bunch of the old time Texas Rangers carried them with the safety off and the grip safety pinned. If I could forget to swipe off the safety on a square range shooting at paper targets I'm pretty damn sure I could forget when I walk around a corner in the wee hours of the morning and come face to face with a Meth Head carrying an ax (Guess how I know). For several years I carried TDAs until I accidentally engaged the safety on one a couple of times in a row doing a malfunction drill during a class. Again, if I can run into that problem on the range it can certainly happen to me in the basement of the municipal parking garage when I'm trying to run a group of street rats out in the middle of the the night. That's when I decided to carry striker fired pistols exclusively. I started out with M&Ps and that's what my employer issued. The reason I eventually went with Glocks was just because the Glock 19 and 26 were just that little bit more compact than their M&P counterparts while holding the same number of rounds. SFAs are simpler to operate. If you're afraid to carry one with a round in the chamber you either need more training or a different gun.