How exactly are you going to "recycle" that 8086 PC? Who is going to
want any component from it, except maybe NASA trying to keep some
twenty year old spacecraft flying? How are you going to repair it if
it fails? Intel aren't going to build more chips just to keep
"repairable" PCs running.

Actually many of the parts from those old PC/XT's are quite useful and
getting more and more scarce. The RAM chips for example will work in any
classic Williams arcade machine, the power supply will work in many of them
as well, and Gottlieb used 8088 CPU chips in their games, lots of other
assorted parts can be used in various projects, there's stepper motors and
drive electronics in the disc drives, high voltage components in the
monitor, just an example of how useful something "worthless" can really be.