Personally ...
... I find the convenience of cordless fools makes spending money on several batteries and matching chargers worth it. It helps if you standardize on one of the major vendors, so all batteries fit every tool. Some of the tools are actually more powerful than their corded counterparts, which doesn't hurt any. (Example: The Makita 36V 7 1/4" worm-drive saw is much faster ripping plywood than my Skilsaw model 77 ... I wouldn't have believed it if I didn't prove it to myself. The Mag77 is pretty much retired now).
That said, somehow I seriously doubt anybody is going to have a Tesla and a couple of spare batteries for long distance trips any time soon. What are they going to do, carry them around on a trailer?
Biting the hand that feeds IT
