|"Average life." Can anyone define that term?|
What is "average?"
Depends on how the thing is used, the environment, how hot and cold, many, many, variables.
the thing is, here, SOME of us had computers when a new hard drive--when a 20 MEG a bite drive was BIG, cost thousands of dollars---4000.00US
Now, you can buy a HUGE capacity drive for not much over 100.00US. At that price, backups and replacement spares seem cheap.