The bottomline with Mac computers is they can run for a really long time with a little TLC (Tender Loving Care). Of course, that can prevent you from getting the latest and the greatest Mac every couple of years. I find that older Macs make great hand me downs to family or donations to charities. If you are into keeping your Macs for a long time then read this article which describes ways to extend the longevity of your Mac. I am sure you have seen some of these ideas before, but a couple of them might be new to you.