Kindof like buying a big 4X4 truck that never goes off the pavement.
Seems like it would make more sense to buy a gun appropriate for the power level you really want. I.e. if you want a 44 special, buy one. Why pay the price and carry the weight for something you're never going to use to it's potential?
You proceed from a false assumption. If you simply wished to shoot .44SP it'd generally be cheaper and easier to find a .44Mag to shoot it from.
In
new you have M21 and M24 "classics", a 396NG, SAA pattern single actions, nothing current out of Taurus (since the Gaucho went TU), mutilated Pythons that are still breathtakingly pricey and Bulldogs. Probably a few stragglers I missed.
In stark contrast .44Mag revolvers are available new in much greater numbers than .41SP. Ditto with used - a perfunctory search on Gunbroker turns up 3 pages of "smith 629" and about a half page of "smith 24". Ruger and Taurus play in the .44 Mag DA arena.
Hence, the analogy is flawed from the outset - with revolvers we live in a world where real 4X4s are cheaper, made in greater numbers from a greater number of manufacturers and in a wider choice of options than their 2 wheel drive counterparts. In such a world would anyone go out of their way to own a smaller 2 wheel drive just because it fits in a
holster garage better? To stretch the analogy to its breaking point, the 4X4 burns the same fuel as its smaller more expensive brethren and gets the same mileage.
Sometimes the easy and obvious answer still works.
It's also why people wanting to buy full sized .38SPs buy .357Mags to shoot .38s - some folks just don't like trying to ice skate uphill.
(H/T Wesley Snipes)