Here was always my biggest problem with Star Trek: The whole motivation for Nero to destroy Spock's planet was that the Klingon planet was destroyed. Spock was on his way to save that planet, but it's sun exploded before Spock could get there. So now, here they are, 30 years in the past.... spock hanging onto the green stuff..... wait a minute... why not go save the klingon planet now? Save both planets, everyone happy? It made no sense to me.