There is nothing wrong with a brass frame revolver, but,
You have to understand what a brass frame revolver IS, and what it is NOT, and what is it INTENDED FOR:
IT IS - a piece of history, because they did exist and were in fact used in battle.
IT IS - a shooting piece with a steel barrell and it will hit the target true to form.
IT IS - a fine looking piece because brass polishes up nice and attracts the eye.
IT IS NOT - a magnum. It must be treated as a light-loader only!
IT IS NOT - a hunter's gun, because it is a light loader.
IT IS NOT - as strong as steel, obviously.
IT IS NOT - a piece to constantly fire and fire and fire. It is soft brass. It moves over a period of time, throwing the gun loose and out of time.
IT WAS INTENDED FOR: A financially distressed military scavenging for materials with which to make arms. Some brass was available and it was used for arms accordingly, to allow the production of a sidearm.
IT WAS INTENDED FOR: Personal protection at close range only.
IT WAS INTENDED FOR: Leaving in the holster until it was absolutely needed.
IT WAS INTENDED FOR: Very little shooting over the years.
With that in mind, buying and owning a brass revolver is an OK thing to do.
If you are skirmishing in a CSA unit, the brass revolver is one of the correct revolvers because CSA issued a number of them to their troops. Loading it for skirmish with blank charges causes no barrell pressure really.
If you are a target shooter, load it light, enjoy it, and fire it a few times occasionally and put it up. It will last a long while if you dont abuse it and understand it. If it shoots loose, polish it up and hang it on the wall. It will look great up there with your horseshoes and old sickle and old iron skillets, washboards and old horse collars and bits, etc, etc.
It definitely has it's honored place in history, and it definitely has it's place in the BP shooters world. That cannot be denied.
I have bought and traded several over the last thirty years. I have fired very few of them that I owned. Mostly I bought them at reduced prices and later traded them or sold them in order to purchase other things I wanted or needed at the time. Those that I bought and sold or traded, I spent lots of time de-burring and buffing and polishing the hell out of. When people see shiny brass, they react to it and often will want to buy it or trade for it. They make good trade guns.