It doesn't necessarily depend on the things you are monitoring. If you are running one server, don't sweat it - if you are running anything more than 20+ server

It doesn't necessarily depend on the things you are monitoring. If you are running one server, don't sweat it - if you are running anything more than 20+ server (my preference) and the capacity is constantly growing and you still don't have a 24/7 sysadmin. I think you are doing it wrong. The key point is, if your business model depends on more user usage ie, more uploads more money (on a 60 server scale), you would like to have someone standby all the time.