I am really happy to hear this. When I first heard the Volt was coming out, I was thinking of this very situation. I had hoped a lot of people would do this very thing: wanting to try out electric but wanted the gas backup. And then I was hoping they would discover that they had barely put any gas in it over the next several months and realize their driving patterns really worked for this, especially if the electric range was 200 or so miles, and finally make the full switch to electric.
Indeed. Our Volt was purchased primarily for my wifes commute - about 35 miles/day. She even got 2 hours of free workplace charging/day. It worked brilliantly for several years. I used to only keep a couple of gallons of gas in the tank because we'd hit the annual "Fuel Maintenance Mode" and have less gas to burn off. As of when Voltstats got frozen earlier this year, we were at 95.2% EV with it.
I also used it to explore the L2 charging around the Bay Area using various charging networks. Sure it was usually more expensive than charging at home, and sometimes more expensive than using gas. But that wasn't the point.
In fact my wife still prefers to drive the Volt over my Model 3. She likes the more conventional controls, and the ICE backup. But for me, there is no question which car I'd rather drive.