stockpile baby .... believe me - keep a ton on hand - and the very last thing you'll ever do it is stress Whoooah .
Lithium is a many splendored thing. All jokes aside, it's a Godsend to people and families of those people who are bipolar.
The same arguments were made years ago about the material in catalytic converters .... (magnesium as I recall). Personally, I really liked the NiMH battery in my 2010. Quickly charged, no degradation in 130,000 miles that I could tell, no threat of fires, no overheating problem and etc. And, I have read where engineers are now doubling the energy potential. Obviously I am just repeating what I have read, but I'm sure that Lithium will not be the only chemistry in the future.