I've seen too many of these debates. A lot of old-timers recommend revolvers to new pistol shooters. Let me say as a newbie that I found a revolver more counterintuitive than a semi-auto. Maybe it was because most of my toy pistols as a kid were semi-autos, and I started with a Ruger 22/45. But I can usually pick up a semi-auto and figure it out in seconds, while I really had to puzzle over my new Smith and Wesson .357.
Here's some things I found true about revolvers:
-They are easier to shoot accurately, if you take time on your shots
Revolvers don't have moving slides, so that helps in consistent shooting for me. Great single-action triggers help accuracy. Greater barrel length may give a better sight radius.
You can't limp-wrist a revolver
-Revolvers tend to work no matter what you put in them. (BUT I've found some cycling issues in my 686 that may have led to light primer strikes, or just skipping a round. Plus my 686 disassembled itself while firing .357s once! At least IA drills work on my semi-autos.)
-You can use many different bullet weights and ammunition combinations (but what I really want is consistency, so sticking with one weight is best for me! Plus, using .38s in a .357 cylinder leads to major fouling.)
Here are some things I found not true:
-Revolvers are easier to clean (no, cleaning 6 cylinders is like cleaning 6 semi-auto chambers, plus the barrel. It is in fact a pain to clean a revolver, especially since you can't easily remove the barrel for optimum cleaning. On the plus side, you don't have to disassemble a revolver for regular cleaning, so less knowledge of the firearm is required compared to a semi-auto. Once you have the knoweldge, a semi-auto is EASIER to clean. And forget about detail stripping them!)
-They are good for weak people (maybe to avoid limpwristing, but recoil is greater with revolvers, so controllability is actually worse)
-They are good if you don't have as much time to train (actually, you need to train harder because of those horrible double action pulls. As far as I can tell, the supreme asset of the semi-auto, when applicable, is the single-action pull for repeat firing.) Plus, revolvers have more flash, as far as I can tell, and tend to spit out lead. Kind of jarring for the beginner shooter.
-You can get a better grip with a revolver because it is easy to go out and buy the 'perfect' grip. (Bull. Maybe this is just a Smith and Wesson thing, but the grips have to conform to the butt design. You'd think that since there is no magazine in the butt that they could design something more ergonomic than a semi-auto, but no, my 1911 and CZ beat my S&W N and L frames for ergonomics. I still haven't found the perfect grip, and I'm tired of spending $20-40 a shot to do so! Stock semi-auto pistols beat my revolver grips. I like Ruger's idea for the GP-100, though, will have to try one of those out some time.)
All in all, I feel that there is a lot of wasted weight in revolvers. To get a .357to be manageable for a new pistol shooter, and sturdy enough to handle serious loads, you have to use a heavy frame. I can move my CZ-85 around and it feels like an extension of my hand. But it hurts my wrist to maneuver my 686 5-inch with the full underlug. I also find I need a more rigid shooting position for the .357 revolvers than the 9mm and .45 ACP pistols. This is expected, but you start to wonder why you are carrying such a heavy, high recoiling revolver when there are carbines that weigh almost as much and control the round so much better. Why drag a heavy .357 revolver around when a semi-auto is mostly used at the same distances?
I can see the advantages of revolvers for hunting (which we are not allowed to do in Canada), for target shooting, for reloaders (most newbies aren't), and for firing big calibers. For going without maintainance over long periods of time (which is not really necessary in Canada unless you carry for bear defense), or leaving it loaded in a glove compartment (illegal in Canada, so forget most of the U.S. gun advise), revolvers have an advantage. But for fast, close range shooting, semi-autos seem to prevail. Yes, semi-autos require more care and fail occasionally, but so has my 686, the "best" revolver on the market.
Anyway, these are just the thoughts of an amateur pistol shooter who has some experience with revolvers and semi-autos. I find that revolvers have advantages in ease of accuracy and reliability, but that they are overstated. On the other hand, they recoil more, often do not fit the hand, have trigger pulls that require greater practice relative to a semi-auto, excessive flash and lead spitting (and yes, my 686 was in 'time' when it did that), and are unreasonably heavy when you get into the magnum calibers (possibly the primary reason to use a revolver). Revolvers are like a fine watch, they work perfectly and then they don't work at all and you don't know what to do. So I couldn't recommend them to a 'newbie' as easily as some revolver shooters. Many of their advantages come from U.S. laws that allow unlocked storage of revolvers loaded with ammo, and hunting with revolvers. For pistol newbies, I'd recommend a good SIG, CZ, M&P, or the like, after training on a .22.
These are just my impressions in the short term. If I had to train to become proficient with a handgun, perhaps I'd find that revolvers are the better choice, because of the way they aid in promoting ammo conservation and good trigger practice. But for now, revolvers seem an encumbrance.