I did for years until we had a problem and "the boss" thought it might be better to have more than just me available when something goes bas. The guys he brought in to solve the problem changed EVERYTHING ( and have not made it any detter than it was before, when it all comes down to it)- and coming up towards retirement I was just as happy to let them have the problems and take the blame. An upcoming merger may change the whole system again - and I'm just too happy to not be in charge of THAT.