@Vern Padgett IMHO, it takes a disconnect from rational thinking to state someone who pays for a feature is a freeloader for using it.
You might have somehow confused a retail purchase contract for some sort of unwritten social contract. I did not purchase my Tesla primarily to further Elon Musk's vision - I purchased it because, to me, it was a vehicle with fantastic styling, incredible performance, state of the art technology, and great economy, as well as the convenience of HOV access and comfort for my 6'7" frame.
I do support Mr. Musk's vision for the future, in the sense that his obsession with populating Mars to save Earth is providing the rest of us with technological knowledge, scientific advances, and game-changing consumer products at a speed only possible when a person with his intellectual virtuosity and financial wizardry chooses to pursue his dreams.
But as a mere mortal, I have worked very hard to earn the money I spent to purchase my Tesla, and I expect Tesla, the corporation, and Mr. Musk, it's CEO, to do whatever is necessary to fulfill all the obligations of the contract they made to me regarding the features my purchase included. If that requires Tesla to allocate additional resources towards the construction of more superchargers to accomplish that task, so be it. Tesla, and more specifically Mr. Musk, have never had any issue securing additional funding for Tesla projects when needed to complete the task, whether financing the incredible cash-burn of the Model 3 intro, the Gigafactory build-out, or initially getting the Model X out the door. So, I don't see an issue IF Tesla decides it's in their best interest to honor their obligations to the soon to be relatively small number of owners with Free Unlimited Lifetime Supercharging. It would be a short-term investment with potentially huge long-term benefits to the survival of Tesla, and by default, Elon's goals for our future.
Of course, if you feel strongly enough that you should be paying for the electricity you (or others) avail themselves of, please feel free to start a go fund me account where you can contribute your money to pay for the additional required infrastructure, and help relieve Tesla of the financial burden to customers they willingly created for themselves. Mr Musk and I will both thank you for it