My primary argument against the .380 is, and always has been, that by the time you shrink the gun to the point that it offers a size advantage against modern 9mm pistols, I can't shoot it so well. As soon as the gun gets much shorter than a G26, and real sights turn into those horrid triangular pyramid things, there's a pretty sharp drop-off in my ability to shoot them well. 7 yards, I'm still okay. At 10? Forget about it.
Ditto for J-frames, sort've. I can shoot them great if the sun is shining. At dusk, forget about it. You're probably pretty safe from me at 50 feet.
Given that there are plenty of pistols available that are concealable, and have real sights and a trigger-to-backstrap length that doesn't suck, I don't much care for the .380 m'self.
As for "I feel"--well, it's a variant of "well it works for me". But the thing of it is that "I feel" is a weak defense against a weak argument. You can apply the crux of ".380s suck" to pretty much any cartridge:
Don't carry a 9mm, carry a .40/.357 Sig.
Don't carry a .40, carry a 10mm.
Don't carry a .45, carry a .45 Super.
Don't carry a .45 Super, carry a .460 Rowland.
That said, I don't really buy into the "expert opinion" counter-argument (sorry Sig), because nobody's really been in that many gunfights. In any case, it sort've sidesteps the problem. Sure, a (insert small-size caliber here) might be sufficient in 95% of cases, but is downsizing worth giving up on the remaining 5%?
Hence why I argue against .380 as more of a "pocket guns are really limiting for me" thing. I'm nearly as good with a G26 as I am with a G34, and the 26 is really concealable. And, curiously, I know I'm better with a G26 than a full-size 9mm 1911.
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