The problem is once you consider it part of your standard comp, you take it for granted. If emergencies almost never happen and then one does, you will inevitab

The problem is once you consider it part of your standard comp, you take it for granted. If emergencies almost never happen and then one does, you will inevitably feel cheated when you have to wake up at 2 AM on a Sunday. Much better familial optics if you can tell your family "hey we got an extra $500 for that" versues "oh, dealing with these is included in my take-home salary". Even worse, if emergencies happen all the time, your family is going to hate you if you don't have some reward you can show for each one, especially if there are other jobs at your salary range that don't have an on-call clause.