I'd like to mention that that are several other uses for wings apart from flying. All kinds of birds use wings to beat opponents in a fight or use them to make themselves look bigger and scare off enemies. Both these uses could have come in handy for a Balrog I think. Also,wings can be used as flippers or as a parasol or to hide chicks but that wouldn't apply to balrog wings i suppose...as for the wings loosing their use in flight in evolution....it would have been a great way to explain balrogs having wings without being able to fly.....but unfortunately,Tolkien didn't believe in evolution like several boarders,including me.It allways strikes me how christian a lot of you are.
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Nothing is evil in the beginning,even Sauron wasn't
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