Should double engine failure be so catastrophic?
I dimly recall that one single-engined aircraft (the Harrier GR3, or the Hawk?) did originally have a RAT to allow deastick landings, but that this was later removed in recognition of the fact that this was unlikely to ever be successful.
The Spanish Typhoon DA6 (two-seater) had been undertaking engine relight trials and was returning to Getafe, when it experienced a flame-out on one engine, at 40,000ft, over Toledo. The aircraft descended to 30,000ft, where the crew attempted a relight of the dead engine. At this point, the second engine flamed-out and with the aircraft descending, the crew ejected - having first ensured that the aircraft was headed for a 'safe' area.