Feels right in my hand, nice balance.
Looks like a "Real Gun", and people comment on it. It ain't no toy, it looks like it means business, in other words.
No feeding failures (yet).
In most wheelgun calibers, more versatile. A 4" .357 Mag is most definitely NOT a "one trick pony", it is about the most versatile handgun available, and that's not about to change anytime soon.
Doesn't chuck brass where I can't get it (I reload).
Doesn't chuck brass where I have to crawl around and retrieve it (I reload).
I shoot at an indoor range -- when those guys with their techy-macho brass chuckers start snickering, I just load up some fire-breathing magnum loads -- it gets their attention.
And if the fire belching doesn't impress them, the targets I retrieve with the tight groups in them do.
No worrying about bullet shape & weight causing feeding issues as long as you stay within OAL specs.
Wadcutters & Semi-Wadcutters? No Problem!
Capacity isn't that of a brass chucker, but still adequate if you do your part.
Simple point & shoot interface -- no fumbling for controls when the chips are down. Just pick it up and shoot.
No worry about "cocked and locked", or about whether you left the safety on or off.
Oh, and did I say "Fire Breathing Magnums"? And in the same gun as powder-puff target stuff, too -- with no adjustments required!
No worries about extra light loads not being able to work the action.
Strong design means that I don't have to worry much about shooting hot loads, either.
Sweet Trigger -- both SA and DA.
More opportunity to get the grips just right for your hand.
Proven design that has gotten the job done for a long time.
Nostalgia.
Heritage.
Aesthetics.
Elegance. (remember what Obi-wan said...)
By and large, there aren't going to be any big changes in revolver design (for the better, anyway), they are pretty well optimum as-is (well, IMHO the older ones are better...) and have been for quite some time, and this is a good thing since they won't become obsoleted by next year's or next decade's models.
A good one will outlive you and your children and your grandchildren as well if it is treated right -- this is proven, not hypothetical. And I'm not talking about safe queens, either.
Dedicated revolver rounds headspace on the case rim instead of the case mouth, so magnum revolvers can still shoot shorter case sub-magnum ammo just about as well -- show me an autoloader that can do THAT.
DA revolvers are trivial to check if they are loaded -- just swing open the cylinder, none of that "one still in the chamber" stuff.
Intimidation factor of being able to see those "wicked" Gold Dots from the BG's perspective. I mean, "Lookie here at what's coming your way!", you can see them buggers in the cylinder when it is pointed at you -- them ain't no FMJ's, baby! Granted, you can still have that sort of ammo in a brass chucker, but they can't SEE them. Only applies if it is not dark.
Intimidation factor of the flash and muzzle blast from magnum loads, or even the stouter sub-magnum stuff -- If you manage to not get an initial hit, the BG(s) will still probably have to change their drawers after they run off. They'll get the point right quick-like that they aren't facing any little pop-gun. Nobody wants to face down someone armed with a fire-breathing monster, even if it only has 5 more shots left in it. Almost as intimidating as Mr. Shotty.
And so on and so forth...
That said, I'm not opposed to autoloaders. They certainly have their place, and I wouldn't feel under-armed if that's what I had. But when the chips are down -- when the SHTF -- there will be a revolver on my hip or in my hand if I can help it. And if I hear something go bump in the night, a revolver is what I'll reach for -- simple, reliable, effective.
Six For Sure! (and a couple of speedloaders) (and a small autoloader for backup, JIC...)