I've had hoses and belts outlast the engine. I don't replace them
unless they go bad. I can remember a long time ago, on my 1975 Chevy,
I had hoses that sometimes only lasted a couple of months. The
preformed hoses of today aren't rpone to breakage at the bends like the
older hoses were. When I threw away ly last car, which had about
160,000 miles and 11 years on it, it had the original hoses and belts
on it (except for timing belt, which I do change periodically).