Every product has an end of life... these are computers that are five to six years old. Many of their components are at the end of their life expectancy. It is time to upgrade.
Considering that 5-year-old iMacs will be able to use Mountain Lion, I don’t see how the “obsoleting hardware to make a buck” argument can fly.
XP still running on 30% or more of peoples PCs still even in the business sector. Not bad for an OS that debuted in 2001, still chugging along 11 years later which is unheard of in the fast changing times of technology and computers. Microsoft tried to end it in 2006/2007 but the fiasco of Vista made them support it against their own wishes. Power to the people!
I have a Dell Dimension 4700 from 2003 about as long as I have been on FR. It’s running Windows 7 and pretty sure there will be no problem with Windows 8 either. Again I am saying a 10+ year life span and still staying current is a remarkable feat. Find me a 10+ year old Apple running Mountain Lion.