Our 2000 7.3 with 138,000 on it has had only 1 problem and that was a cam position sensor at 85,000 miles.
That's not really a diesel problem.
It uses 1 quart of oil between changes and runs like new. But that isn't any different than what I would expect from any of the newer trucks, gas or diesel.
We just replaced alot of front suspension parts,ball joints etc and the front leaf springs.
Again not diesel related unless you want to blame the weight of the engine which I don't.
It's just a common repair to be expected on older gas or diesel trucks.