When I went to France I noticed a lot of people use resistive heating because the electricity is cheap.
Electric (resistive) heating is generally considered more expensive than other methods of heating in France. Of course that depends on the price of natural gas and oil so it ma change. Really the advantage of electric (resistive) heating is that the equipment is really cheap. So it's favored by landlords but also by people who cannot afford better. Finally there's another reason it's popular in France which is that it has been pushed forward to ensure nuclear reactors have some place to send their electricity to at night as they cannot simply be turned on and off.