Sometimes it has nothing to do with making sense.
Exactly.
From a practical point of view, a .44 magnum is the logical choice due to the versatility. And maybe your budget is limited...whatever. A .44 magnum makes a lot of sense for the buyer looking to get the most for their money.
But the .44 special is such a good cartridge.
It justifies a gun chambered for it alone.
I own a few examples of the model 24. They are excellent guns and among the favorites in my modest collection of S&W revolvers.