I shoot better with autos and generally prefer them, however, my primary carry is a j-frame in .38 Special for functional reasons. If there is an auto in my belt, then that little revolver is still in my pocket.
I'll admit, though, there are times when I take only a K-frame .357 magnum to the range, because the slower pace stretches out the ammo, it requires a bit more concentration/discipline to shoot well, which means it's rewarding when you're on target, and I don't have to pick up any brass when I'm done.