I think alot depends on the cost of electric power (from a geographic standpoint), but the only benefit I see at this point in time is greenhouse gases are reduced minimally. The actual cost to charge an electric car is minimal, but how much greenhouse gas is being produced by each electrical provider to provide that power.
I just bought a new beater car (I call it a beater because to me it's disposable) and while I had considered buying electric, I still can't get past the fact that there isn't an infrastructure to handle long distance driving, which is why I bought a gas powered car (EcoSport with 1.0 ecoboost getting 38 to 39 mpg).
While the car makers and government are pushing electric, there is no infrastructure to support it, so in my eyes they are putting the cart before the horse.
Build the infrastructure, then sell the idea.