The idea that "a lot of failures are totally unpredictable" is a comforting excuse for pilots as they walk away from a smoking wreck, but it's simply not true.
OK Manwell, let's look at this scenario from a real accident in 1975. A Chinook is carrying an external load on a training exercise.
One engine lets go in an impressive manner, with a turbine wheel leaping out of its engine, ripping through the tower, taking out the hydraulics and electrics, and lodging in the other engine, causing a huge reduction in power. They are going down, no way to stay up.
Pilot tries to pickle the load, but with no power cannot do so.
Loadmaster scrambles to get to the manual release, but slips in the hydraulic fluid gushing into the rear cabin and cannot get to it. They cannot drop the load.
Pilot manages to just fly the aircraft onto the ground straight ahead, having to land on the external load along the way.
Fortunately for them, the load, which is usually a semi-trainer, was 3 rubber bladders of water, which squished and absorbed the impact.
As the rotor RPM decayed, the rear blades started chopping through the cabin roof, as the tilt mechanism, powered by electrics, was still in full forward mode.
Luckily, nobody was injured.
What part of that accident was predictable to you?
And your trail of logic is a little off-track, accusing me of being scared and out of control, simply because I question your bold statement that everything is predictable. Definitely not scared of declaring your thread as a load of horsefeathers.