I always thought that this whole "Kryptonite vacine" concept was a cop-out.
I can understand why Clark thought a vacine would be a good idea at the beginning of season three. (when they mentioned he and Dr. Klein were working on one.)
But then you get the Kryptonite virus. How would he have combated THAT if he were invulerable to Kryptonite? I have also read a couple of fics where they need Clark's blood for Lois in order to conceive or to save her from blood posioning after the baby's born. How do they solve THAT problem without Kryptonite?
I think in the end, they realize that even though they wish villains didn't get ahold of it, Kryptonite has its uses.
(I'm planning on discussing more of this in a future chapter of "A Box of Swiss Chocolate", but that's all I'll say for now. Spoilers! (Not even my beta has seen that yet.)
