Coming from the original point of view that "we don't need these physical cards anymore" .. You actually make some really solid points. Specifically the ability

Coming from the original point of view that "we don't need these physical cards anymore" .. You actually make some really solid points. Specifically the ability to resell your phone conveniently. Imagine having to agree on a sale and then waiting for the changeover process to complete. Which knowing certain phone carriers would take at least 24 hours.