First of all, because an electric car is an eco-sustainable choice.
An electric car does not emit CO2 into the atmosphere, electric cars therefore aid the reduction of dangerous emissions ( such as carbon dioxide) and thus improve air quality.
Electric cars are silent, not only for those driving, but also for those outside the vehicle. It is therefore effective in reducing noise pollution, which is high in densely population places.
It is economically efficient as the cost of a recharge is “minimal” compared to the equivalent outlay for a full tank of a traditional car.