Historically I'm a 1911 guy, but revolvers definitely have their place. I carry one for backup, and I don't feel undergunned when it's all I have.
The organic shape of a small revolver offers some real advantages for concealment. I find that this especially matters with ankle carry. With revolvers, a brief glimpse of holster can be mistaken for droopy socks, but with a semi-auto it tends to looks like you have a candy bar strapped to your leg, which if nothing else just invites a second look.
Revolver advantages:
- organic shape
- more tolerant of *neglect*
- simple, non-bewildering operation
Semi-auto advantages:
- flat, narrow shape
- more tolerant of *abuse* (dropping)
- speed of reloading
- capacity
Safeties? That's not really a revolver-vs-semi issue, as there are plenty of semis without active safeties. Trigger weight? Short barrel? External hammer or not? Same answers.
The mechanics of revolver operation are pretty straightforward, and that can be a big deal. I agree that snubbies are over-prescribed for newbies, but a 4-inch barreled revolver can be a really viable choice for that reason alone. I've seen too many novices intimidated by semis to not take this issue seriously.
Another place revolvers shine, IMO, is in pocket carry. The small semis just require more maintenance than most people are going to put into them. With a linted-up revolver you can always just crunch through to the next round. Ideal? No. But this is the real world.