I haven't read through the entire thread, so I'll only be judging from the initial posts for this.
I'd save Clementine. From reading what that cure is, it's simply not good enough. It only works for newborn babies? There aren't going to be a lot of those. Plus, the ones that are born increase the risk of death for itself, its parents and their group dramatically. At some point in time, that baby will cry. If they are anywhere near any walkers, it will alert them. They can be dealt with, but it will make the walkers a much more dangerous threat than they normally would be because they would always be drawn by the cries of the baby.
I'm sure we're all well aware that a baby cannot defend itself in any way. That means someone has to be protecting it at all times if and when walkers launch an assault, which means one less person for defense(or less efficient in that defense). We don't really have time to wait for those newborn babies to grow into able bodies that can help defend areas, either. Having a baby is just too risky in areas that aren't very secure(which most aren't) and that means there aren't going to be a lot of them in the world, at least initially.
Survivors can adjust to the infection. It can become a routine practice to destroy the brain of people who pass on, naturally or otherwise. People can adapt to the new life and slowly try to rebuild by themselves(like the Alexandria Safe-Zone in the comics). Simply being infected doesn't harm you, and turning after dying can be dealt with(every house comes supplied with a batch of salt licks
If the cure were better, if it could be injected to any living human and cure them, then maybe I'd reconsider. As it stands, it's simply not good enough.
Besides, it's not like you're really deciding the entire fate of humanity. Survivors will still survive, cure or no cure. If it were a "if you save Clementine every other human on Earth will instantly die" decision, then I'd probably choose otherwise.
In closing, if the cure were better, or humanity as a whole was in more immediate danger by the decision, I'd consider dropping Clem. Otherwise, no.