DR. DIFF 11.25 rear Disc Brake Kit

Why is that?

They seize up, rust up then Heat up rotor which takes out pads, rotor and sometimes caliper. Also destroys shoes. Then you get a giant groove and cant get rotor off because shoes are caught. Turns a simple job into a nightmare.
A simple brake job turns into replacing the shoes everytime you change pads and rotors. Gets expensive on the 2500 rams
If i used it regularly. Who does that? Maybe it would last.