I love the Prius but it's a hybrid, not a full EV. Now when we've seen that full EVs can have long range why would we bother with internal combustion engines at all?
Charging station coverage in the US is about where digital cellular coverage was in the mid-2000s. It exists in most places and in major population centers, but there are clear holes. Gas stations meanwhile are still ubiquitous.
The outlook may be different in 5-10 years, but right now in the US a plug-in hybrid is the best of both worlds IMO. Assuming your round-trip daily commute is within the electric range it's a de-facto pure EV, with the gasoline only kicking in for occasional longer trips.
Even this may be optimistic. I can name the 5 closest gas stations to my house (even though the closest is about 8 miles away), but I couldn't name a single charging station. Not one. I see Teslas on the road, so they must exist, but I haven't a clue where they are.
And Tesla's supercharger map: https://www.tesla.com/supercharger
I've found they tend to be out of the way or attached to shopping centers/big box stores/other places you wouldn't expect. It's rare to find a charging station with gas-station-like visibility, the numbers just aren't there yet I guess.
Indeed, it's much more complex than an EV. Yet as of February 2017 Toyota alone had delivered ten million hybrid vehicles, with 80,000 mile drive train warranties - better than Tesla offer and on a scale magnitudes greater.