I have a late 2006 iMac - the last of the white iMacs - and, more significantly, the last of the matte screen iMacs. In 2007 when the first of the mirror-screen iMacs came out, I rushed to buy one of the remaining matte-screen iMacs. Since then Apple has refused to budge on the issue of forcing glossy-only onto iMac users. No doubt many or even a majority like glossy, but many also want matte screens. See
http://macmatte.wordpress.com where there are now over 2,000 petitions pleading with Apple to bring back matte, or some form of non-reflective screens. But it's close to 5 years and Apple has refused to listen.
I mention all this by way of background, because, if not for Apple's refusal to offer matte screens, I would probably have bought a new iMac every 2 years, even more often simply because I can tax deduct them for my business, and it's easy to sell and transfer data between Macs.
Apple's intransigence has forced me to stick to this old 2006 iMac -- and you know what, it's taught me that that old equipment meets my needs just fine. It is running Snow Leopard 10.6.8, the most rock solid Apple OS available right now. Lion is still coming good. Apple's stubbornness has weaned me off this fixation of having upgrade my Mac every few years. What if I only upgraded when my current Mac doesn't suit my needs. But if I'm only doing word processing, emails, web browsing and communications - which won't slow down even in 5 years - and even if the hard disk dies I can get that replaced for less than $200. So why on earth should I get a new iMac?
I have Steve Jobs's obstinacy to thank - for refusing to bring back matte screens for 5 years - thereby saving me the purchase cost of about 3 iMacs. As I've used my white iMac, I've come to love its classic form - ahead of the more crass, rather more soulless silver ghouls with their mirror-like pretences. After going through periods of frustration at being unable to upgrade to new iMacs, I've settled into a state of contentedness, realising that my present iMac - with perhaps a hard disk upgrade - might last me 10 years.
Then again, the latest rumors are that the forthcoming iMacs will have anti-reflective glass. Maybe those new iMacs might stir up Mac-purchase lust again, and I might jump back onto the conveyor belt of consumerism needed to support our economy.