In the end it doesn't matter whether five years or ten years. We have a tape robot by Sun in our data center. (Anybody here who remembers who and what was Sun?) This tape robot runs very well, so why should we replace it. It runs with Windows 2000. In our workshops we have have some CNC-machines what runs with Windows NT 4.0. Using an operating system that runs out of support by the origin publisher is never a good idea for such devices. On the other hand we use Windows 10 LTSC for control our particle accelerators. The control machines are standard workstations and the hardware must be replaced every five years. So I know some old-fashioned people at our institute who would like to stay on Windows XP forever will be disappointed. But in the end the change it will not really make i difference for us.