Re:Yeah sure... (Score 1)

You missed at least one category: 4. People with machines that won't run an upgrade. I've got a few boxen at work that don't have the memory to handle anything bigger than XP, and the software I need them for isn't available for a Linux/etc.. Besides, they work for what I need them for, so why should I bother? The machines are completely static: the software I use on them is frozen and they aren't worth putting anything else on them, so why fuss?