Why do you believe you should be able to recharge for free? Electricity costs money. Maintaining EVSE's costs money. Driving a car is a privilege. That privilege comes with a price per mile. You can bet if it's free in San Francisco, every mooch around will have already found it and you'll be waiting in line for hours for your freebie. Not a very good use of time for $3.00 worth of electricity that will get you 70 -80 miles down the road.
Gasoline and diesel fuel should be free too, right? It just flows out of the ground all on it's own, refines itself, and ends up at the pump, free for the taking. What is wrong with this thought process, apply it to electricity too. Your local dealer will give you the first couple of hits of heroin free too. How does that work out? You become dependent, instead of independent.