Originally Posted by
tdracer
Delta and American use the heck out of their aircraft before retiring them, so I suspect most will end up in an aircraft boneyard in the Arizona/California desert and be scrapped before long.
A few will probably end up flying for some third world operator who can pick them up cheap, then cannibalize a few to keep the others flying for a while.
If memory serves, the expected life of the MD90 was north of 100,000 cycles,
so given reasonable maintenance and barring corrosion, they should outlast us.