...jets are sent to the desert because (1) there is plenty of relatively inexpensive space for parking, and [more importantly] (2) Because the desert environment is least harsh on aircraft while parked. Granted, it gets very hot, but (more importantly) it is very dry, which means there will be less corrosion, etc.
Note also that the aircraft have had substantial measures (well-covered windows, tight caps over engines, etc.) taken to protect them from the elements pending potential next use. It's when you see a plane parked, with no covers and no apparent efforts at preservation, that you need to sound the death knell. The first and best clue that a plane's bound for Budweiser duty is the immediate removal of all engines, avionics and the APU.
The desert storage facilities take measures to preserve the operational capabilities of aircraft stored (as directed by the stored aircraft's owners).
Many of these aircraft with meaningful economic life left in them may well fly again. Let us hope it will be sooner, rather than later.
...three miles from BRONS, clear for the ILS one five approach...