I would go with the vaccine. I understand Joel's reasons for doing what he did but he clearly was selfish. But while i found his decision to do so understandable, what really bothered mw more was the decision to kill everyone else in cold blood. That rather than the decision to sve Ellie was his moat villainaous moment and i thought he stepped over a line.
No doubt his decision to do so will have an effect in TLOU2.
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