The War of the Realms claims more and more lives. Asgard cannot be counted on to supply an army to deal with it. Attempting to remove Cul from power would cause a civil war. The Congress of Worlds is useless. The Mighty Thor is impotent. Jane-Thor spends half her time or more playing mortal or being an Avengers and still refuses any effective treatment because she doesn't like magic despite using a magic hammer. That leaves War Thor. The one guy so far who has shown to be truly fighting this war and making a difference for the good guys.
So why is letting him lay waste to Musephilm wrong?
Musephilm has been a threat to the peace and stability to the nine realms since the dawn of time. Surtur is a nigh-unstoppable power house on par with Odin who always returns. The inhabitants are either by nature or nurture willing soldiers in his armies. Their sole goal to to burn to ash everything that is not them. They have waged countless wars and plots over the ages to accomplish this. The children appear to be indoctrinated into this this philosophy from an early age. They have no respect or mercy for outsiders. The very realm is hostile to non-native lifeforms making any invasion costly with an army which may explain why no one appears to have ever tried. Following the WWII parallels, the Queen of Cinders will use civilian shields and send fanatic children out to fight if she becomes desperate enough.
Destroying Musephilm would eliminate a threat that has been around for ages, be a major blow to Malekith's war effort, might convince some of his followers to reconsider, save the lives of the inhabitants of Nidvilar (for the time being at least), give the allies a chance to regroup and maybe get the attention of Asgard.
Aside from abstract morality, why is War Thor laying waste to Musplhim a bad thing? I admit it would be brutal, cruel and barbaric. But it is not like the protagonists have a lot of options. They have no army and few effective fighters. That is why they say War is Hell.
Wouldn't it be better to get this war over with instead of dragging it out? Why is War Thor wrong?
Can't. At this moment, at least.
As you addended, "aside from abstract morality", found myself nodding, a lot, while reading your fair debate points. Hmm... at what point does 'avenger' turn to 'revenger', anyways? Maybe War Thor should measure his fire and fury response with more rational forethought first? Also, arguably, it is (predominantly) the sentience of alien Ult-Mjolnir dictating the fate of Musephilm as opposed to Volstagg's free will, right?
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