I have some thoughts about this. I am a new owner of a S 70D with 19 inch wheels. Since the car was delivered in late June 2016, I've traveled with my family from Northern Virginia to NY and to Orlando. During my trip down to Orlando I stopped in practically all the Superchargers between Washington, DC and Central Florida. As an enthusiast I personally didn't mind stopping every 2 hrs or so to charge. My family, however, was not so happy. While some of the Superchargers were located close to a fast food restaurant, others were not so close. For example, the one in Kingsland, Georgia, was behind a hotel and far from places to eat. The one in Santee was also a bit of walk from a nearby McDonalds. The Rocky Mount location was behind a couple of hotels. There was a Texas restaurant next door and an Outback down the road. The Supercharger in St. Augustine even though in a Premium Outlet Mall, the traffic to get into that location was deadly. On a Friday afternoon when I stopped there it took me an hour just to enter the mall parking lot. The Savannah Supercharger, while at the airport is still a walk from the terminal building. I don't mean to be petty, but driving all day is tiring in itself and having to walk a lot to get something to drink or go to the bathroom is not what I - or my family - wants to do.
The reality is that while is it super fun to drive electric, one does lose the flexibility of stopping anywhere to "fuel". Another thing that we faced were Supercharger locations that were full. As a true enthusiast, I explained to my family that in the next few years there would be more Superchargers. That said, I understood where the family was coming from, not everybody is as patient as a Telsa fan. After my experience this summer, I hope that Tesla makes serious efforts to not only increase the Supercharger locations, but to also increase the number of stalls. I think that there should be more locations closer to each other so that drivers have flexibility in choosing where to stop. I'm personally worried about what is going to happen once thousands of Model 3s hit the road. If there aren't more locations and soon, there is going to be a lot of unhappy Tesla owners.
In the end, I love my car. Best car I've driven; I will never go back to an ICE car. Still it is important to be provide constructive criticism. I'm certain that in a few years we'll have lots more Supercharger locations.