As I patiently sit here waiting for the iMac upgrade, I allowed my brain to wander and came up with this possible scenario. As the title of the thread suggests and as we know, we can use the iMac as a monitor. Now, say in three to five years, possibly more, I feel that it is necessary for me to upgrade to a new Mac, how viable will it be for me to turn the iMac solely into a monitor? That is assuming the iMac will barely be able to run future software and that Thunderbolt/miniDisplay Port will still be in use. I'm thinking of moving up to a Mac Pro by then. Also, what is the life expectancy of modern LCDs?