Realism should never get into the way of playability, especially if it's inconsistent. All I can say is that rain was the No1 factor why I stopped playing the game and that is just terrible game design. Sadly, the word "optional" doesn't exist in Nintendo's vocabulary.
"Here, have a gigantic world to explore with an all powerful and immortal protagonist who can wield magic and climb mountains for days without eating or sleeping. Oh BTW, that all powerful protagonist can't climb things that are slightly wet. Also, all weapons are made out of paper. Have fun!"
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