I've been shooting 40S&W for the last 5 years having moved to it from .45 which was getting too pricey at the time to plink with on a weekly basis. I'd go to the range, leave my .45 on my hip and plink for hours with the 40S&W, same platform, same gun, just a different fatter grip. Eventually I stopped carrying the .45 because you should carry what you practice with and the chances of me mixing up magazines or slipping into complacency with the complications of constantly swapping out a plinker and 'carrier' got too much. I had at that point officially moved to the 40S&W because it also meant that where I had 8+1 rounds and two spares for a total of 25 rounds as a load out, I could now carry 10+1 and two spares for a total of 31 rounds; 46 rounds if I carried hi-cap magazines. At this point the scale leaned so far in the direction of change that I just had to do it.
While the .45 is still my favored round I have to admit that I never looked back or considered going further down since at the bottom of the list of calibers I considered carrying and plinking with was the 9mm cartridge, which despite its high round count left me with feelings of inadequacy in terms of pure stopping power. Too many stories in the news about shootings involving citizens and law enforcement added credibility to my theory there were always multiple rounds fired and a constant survivor. Two situations that I did not want to be in, trying to explain my fired high round count on a stand if a local DA decided that I wasn't really the victim and on the other side of the equation shooting and shooting and shooting a threat that kept being a threat.
So for the next few years I had the perfect comfort zone, not as light as a 9mm not as heavy as a .45 but right in the middle, taking the best of both worlds, capacity and stopping power. But over the last few years at the range with friends I've gotten sick of having to drop 4 mags vs. their 2 mags, sick of the ability to carry 49 rounds with a full load and two spares vs. my 31 rounds and bulky belt/pockets, sick of the internal fight, but most recently sick again of the ammo costs. 9mm is everywhere, it flows like water and .22. You can't go someplace and NOT find it. Tick tick tick the mental scale started moving again.
While I've a few 9mm pistols they for the most part are ultra compacts or safe queens and ill fitted for my needs being plink and carry. So I've been secretly in the market for something that would let me lie to myself in the transition. I decided to go with my original arguments from the 45 to the 40 which was ammo pricing and capacity. Unfortunately those arguments fit far too well in this transition. I've gone from 7+1 slim, to a 15+1 fatty and now shortly to a 16+1 slim. And I love it. I'm still trying to get over the plastic, the lacking hammer, the odd grips that I can't really customize, but its a tool and I'll use it as such.
I'd like to apologize to all the 9mm shooters that I've lampooned, called sissies at the range, whose targets I've shot up after they shot them in shows of bravado, and to the guy I called limp wristed lemon shooter back in 2004.
JMB, please forgive me.