Post 1,
Identify the circumstances and the "threat".
For example one person noted firing from inside a coat pocket. If that will be the circumstances then so be it for that person.
Post 1 mentioned wanting an exposed hammer. If singe-action shooting is desired, then even a Ruger New Blackhawk single-action would suffice.
Ammo and the firearm to fire that ammo can then be identified.
I personally don't plan on shooting .357Mag out of the one J-frame which I have chambered in that caliber (a 640 Pro). I can do it, but I chose to have quicker follow-up shots instead.
If I perceived the need for .357 due to distance or penetration, possibly through barriers, I've got N, L, and even and maybe my K frame for that.
Normally, I'm not planning to shoot through vehicles or over even 50 (more like 25) yards with my handguns.
I'd rather carry .38+P loaded with a .357 as a possible reload, but usually just have more .38+P as a reload and usually carrying a non-.357 J-frame.
I've also lately been carrying .32HR Mag or .327FederalMag out of my latest revolvers.
But that's what I do. If somebody wants to carry .357 that's fine, too. There's much to read on the current/latest ballistics regarding anti-human threats. Heck, I suppose I'd rather have a centerfire rifle or 12 gauge shotgun round if I knew a gunfight was forthcoming, but there are trade-offs as revolvers can sacrifice capacity.
A recommendation for Post 1, do consider a .357 revolver as either .38Sp or .357 can be used once a decision as to which caliber to carry is made.
Of course, then there are several and various semiauto pistols from which to choose too, whether 9mm, .40, .357SIG among others.