That's a bleed resistor to discharge the capacitor when turning off, else it could keep dangerous charge for a long time.
ESR limits current inrush into the capacitor, with ceramic caps you would need some additional current limiting.
Voltage should not be that much of a problem, but there may be other issues with ceramic caps (like cracking due to thermal stress, voltage dependent capacity, microphoning, ...)
ESR limits current inrush into the capacitor, with ceramic caps you would need some additional current limiting.
Voltage should not be that much of a problem, but there may be other issues with ceramic caps (like cracking due to thermal stress, voltage dependent capacity, microphoning, ...)