Current BESS are rated to last 10-15 years. Battery makers are already moving to lithium-free sodium chemistries. It's hard to imagine what we'll be using at the end of seven full cycles (70-105 years from now.) Sodium? Tiny fusion reactors? Firewood and charcoal? Yes, we should care about this and try to leave our descendants with good solutions. No, we should not think about it so much that we leave our descendants with a devastatingly acidified ocean and uninhabitable equatorial regions in the process of worrying about it.

I hope we get rid of the lithium chemistry much sooner.