"How do I love thee? Let me count the ways."
My reasons for preferring revolvers range from the totally sentimental to the absolutely necessary, with some other factors in between.
Others have already stated the revolver's many positive qualities. Biggies for me are that they are easier to operate correctly, which makes them much more reliable in the hands of the novice or the weak. I also believe they are slightly more reliable even for those proficient with all types of handguns, although I wouldn't label semi-autos as unreliable by any means. Semi-autos have their own set of positives. But revolvers are simpler with fewer variables that negatively affect their operation. Subjectively, they are beautiful in the eyes of their admirers. They can also be nostalgic for some of us. They are just cool in every way!
My daddy gave me my first gun before he died, an old nickel finish snub S&W Victory model .38 Special. He had bought this gun used when he took a post-retirement job as a private security guard. The first gun my late husband gave me is a stainless steel Python with a 6-inch barrel; we used to shoot it when we were dating. The last gun he gave me is my little S&W Model 38 Bodyguard, which is the one I pocket carry or put in the console when I carry at all. He felt this gun was reliable, small enough, and easy enough to use and carry that I could have it with me at all times if I choose. All these are revolvers and all have a lot of sentimental value to me. In addition to another revolver that my husband left me, I've since purchased two more S&W's (686 and 642) and a couple of Ruger 101's (.22 and .357/.38 Spl). Yes, I like revolvers.
I'm especially fond of the stainless steel variety.
As for the absolute necessity end of the spectrum, revolvers are also dear to my heart because I don't have enough hand strength to rack the slide on a Glock, so that sort of eliminates them for me. (Do you think?!) My first post was about this, and yes, I've tried all the tricks. They require too much wrestling with the gun and are unsafe for me to attempt with a loaded gun. I'm not crying, though, because I obviously love my revolvers. One of my children or grandchildren can enjoy the Glock.
My dearest coworker before I retired, and one of my best friends, had a not so good experience with her semi-auto the only time she thought she might actually need to fire it in a defensive situation. She is young (30's) and strong, lives out in the middle of nowhere, is married to a retired military man who has some MP experience and who practices with her, and she's a pretty good shot. Of course, her hubby loves his Glocks. But my friend jammed her gun and somehow also made her hand bleed in trying to rack the slide. Fortunately, the perceived threat was only a harmless critter of the four-legged kind. "Susan, please get a revolver." I relate this anecdote because I think too many people dismiss the revolver option for SD too quickly sometimes. I know most of you reading this aren't likely to ever have my friend's experience (but perhaps someone you care about might?), but revolvers certainly do have their advantages from a practical standpoint. Everyone acknowledges that your carry gun should be one "you'll actually carry," but your defensive gun should also be one "you can actually operate." For some of us, the revolver wins hands-down on that one. I don't think I've seen that factor related in this thread so far. LOL
Anyway, those are my main reasons for my love of revolvers.