Join Date: Feb 2009
Location: The Dandelion City
That is one factor. There are others, such as deterioration of transponders and solar panels. There are many satellites in orbit that still have fuel but are out of service for other reasons. Barring other failures, usable lifetime is usually determined by the transponders, which gradually lose power over time.
At 20 I had a good mind. At 40 I had money. At 60 I've lost my mind and my money. Oh, to be 20 again. --Scary