They're hallucinations.

I recommend getting that checked with a psychologist.

Just under 4% of the total amount of B747s have been involved in an accident that lead to a Hull loss. Some of which weren't even down to fault of the plane.

The 747-8 doesn't contributes to any of them as far as I'm aware.

Planes are built to a different standard to cars. Cars are mass produced. Planes aren't.

I don't see the freighters getting phased out any time soon.

You'll definitely see a load of passenger carriers get scrapped, but cargo airlines will continue using them for another few decades due to the nose door so they can get big items in it. Some passenger carrying ones will probably get turned into freighters too.

Sort of how Nolinor still operates the 737-200 Combi with the gravel kit. It has features no or few other planes have.