Windows 3.1

Last week when I entered my hotel room and switched on the light, the TV turned on and showed me a welcome message explaining how to use Pay TV. First I did not pay any attention to this screen, and I started unpacking my bags. When I passed the TV for about the fifth time, I suddenly saw something I did not notice before. On the top of the screen I could see a blue bar with some letters below it. I was amazed. The welcome message was simply a text file written in Write, and the whole system appeared to be running Windows 3.1!!!
It has been a long time ago since I last saw Windows 3.1 in use. I thought that everybody had already switched a long time ago to Windows 9x, but it seems that there are still some of these legacy systems around. Surely the system is running good enough, so why change it?