Replicas are still made, and if you want something more powerful, there are great choices in wheelguns from people like Ruger and Smith&Wesson. But a lot of people (1) carry their handguns around all day, and a slab-sided autoloader is more comfortable to carry or (2) have no confidence they'll be able to stop a fight with five shots, and they feel better with the extras. Personally, I only carry mine when I plan to use them, and my philosophy in home defense is that if I can't stop the fight with the first few shots, it's past time for me to throw the pistol and run like heck, but others have different tools for different needs.
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