Cooking with gas is more economical due to the regulation process. Instant heat on, Instant heat off.
It has always seemed attractive to me that during Eskom ‘load shedding’ at mealtimes, when everyone was phoning take-outs fruitlessly (they also have power failures) one could light a candle and carry-on as normal (have you noticed that gas stoves are cheaper than electric stoves?). The price and availability of gas is my only concern, otherwise I see no disadvantages.