You consider the Posse Comitatus act as being passed for a good reason? Perhaps the effects are good, but the Act itself was mainly passed so that the white former slaveholding states of the south could enforce racially charged laws without the Union military preventing them.
Or so the captains of industry could strike break without fearing the same?
Just because you don't like the particular use case doesn't detract from the fact it is generally not desirable to be throwing around your military at your own people at the drop of a hat.
You consider the Posse Comitatus act as being passed for a good reason? Perhaps the effects are good, but the Act itself was mainly passed so that the white former slaveholding states of the south could enforce racially charged laws without the Union military preventing them.