Down shifting

[1987IDI]

I'm wondering if there is any reason that down shifting would be a problem or cause any harm to my engine or tranny.
I can imagine that it puts unnecessary wear on both of them, but i have had to pull a bobcat a few times, and the trailer breaks don't work anymore, so i rely on down shifting and giving myself LOTS of stopping room.
Any thoughts?

[CDX825]

I think so long as your not over revving the engine its ok. I know many people do it so as not to overheat the brakes on long hills.

Sure would be cool if we had jake breaks!

[85f250dually]

ive been doin it since i got my truck. any time i pull a trailer i downshift when goin down a grade or when im stopping. my truck with straight 3.5 pipe from the turbo back actually sounds like it has a jake on it even my truck driver buddies say it sounds like a pete.