I can think of multiple good reasons to have .38 Special revolving pistols. Previous posts have covered it well, so, I will just say that my usual daily urban carry guns, lately, have been my two 2” K-Frame S&W Models 64. One, or the other, or both. Yes, “ammo capacity” means multiple revolvers.
I am less likely to subject my blued sixguns to daily carry, but I have a post-war 2” S&W pre-Model 10, with a “transitional” hammer, and a 2” Colt Official Police. Rarely toted, for about 20 years, is my Nineties-era S&W Performance Center Airweight, based on an early model 642. (My usual minimum, since 2002, even for back-up, has been the SP101.)
My longer-barreled revolvers are .357 Magnum, rather than .38 Special, but I am gradually aging-out of shooting ammo approaching full-pressure Magnum in anything other than my lugged-barrel Ruger GP100 sixguns. For future purchases/trades, .38 is Special enough.
I am not against auto-loadin’ pistols. A “baby” Glock can be a decent “emergency reload,” when my primary is a revolver.
Actually, I no longer trust my gimp right hand to always provide a stable platform, for reliable auto-loader cycling, but nearly 40 years of habitually reaching for my right hip, for the “primary” weapon, is hard-wired into my brain. So, a .38 Special revolving pistol, that does not mind how firmly I hold it, and does not pound my aging right hand too badly, is a very good and valid thing to have.
I am used to reaching for a reload with my left hand, and, I write left-handed, so, controlling a trigger with my left index finger is not a problem. My left hand, thumb, and wrist are much healthier, and able to shoot autos reliably. So, my holsters for “baby Glocks” are mostly left-handed. My second gun may be a second revolver, of course. Eleven or twelve rounds is quite a bit, even in the big-city environment.