>A $3,000 computer purchased today will depreciate to zero in 3~4 years, leaving you with hopefully some happy memories and a paperweight. My desktop contains

>A $3,000 computer purchased today will depreciate to zero in 3~4 years, leaving you with hopefully some happy memories and a paperweight. My desktop contains many parts manufactured more than four years ago and it is still useful. In fact, it no longer matters how many dollars of value you think it is worth, it is still effective, consuming only electricity and my time. Your thesis is incorrect.