When did they have time to plan anything? Doomsday started fukking shyt up the second they knew he existed. They figured out how to kill him mid-fight. The spear needed to kill him is the same spear that was going to be used to kill Superman. Just being near it was harmful to him. Wonder Woman was holding Doomsday down with the lasso. She wasn't doing any harm to him during the fight, he was just getting stronger. Batman isn't strong enough to penetrate Doomsday's exterior (pause) so it leaves Superman up to the task. You distinctly remember a part of the fight but forget the worldwide response to Superman's death, which was one of hope and optimism. You forget the man whose sole purpose was to kill Superman ended up being encouraged to find other metahumans to protect the world. You forget that same man's response to Wonder Woman saying that men are horrible was that men are still good. Hope and optimism is what everything post death of Superman was about in that film. It would have been more hopeful if he continued doing what wasn't working until he died which would have meant the end of the world as opposed to him doing what he knew might mean his death but would save a world full of people who hated him/blamed him for the events at the end of Man of Steel? "If you seek his monument, look around you" was one of the last images in the movie. The end of the movie was all about foreshadowing what miserable nerds have been asking for for years.
Agreed.