No program is so obsolete that nobody wants it anymore. No one can keep up with infinite change. The higher the rate of change, the more people get overloaded. Being a system administrator would be much easier without the users. It would also be pointless.
Network administration is the closest to being a user-less system administrator.
Share the Work Empower people - don't get in the way. Figure out your value add and get out of the way for the rest of it. Learn who the experts are and rely on them. Sec use to phone system and copiers Always explain things to users as you fix them. Sometimes they learn.