Now to play the devil's advocate.
You know, I honestly don't restrict druids myself. The irony is that I even ignored the metal bit when I wrote my fan fic. 😁
Wynari Nell, a Circle of the Moon druid, winds up wearing armor with metal, and I don't have anyone question it. Didn't even cross my mind when I was writing it, to be honest.
Ahhh! Inconsistency and immersion breaking! Writer's sin committed.
Some think it's stupid that druids can't wear metal since metal can also be found in nature. They do feel that it's a stretch... That D&D just does it to limit druids in some way, not because it really makes sense. I like what Vortex said, though. This makes sense, "I've always seen it as Druids can use some metals, mainly the pure ones, iron, gold, silver, etc. Hell, some sickles are made from electrum, which is gold and silver mix (representing the sun and moon combined). Steel is the problem because it is essentially processed and combined with other ores, so it wouldn't be considered "pure" any longer."
But like Niara said, how you gonna implement that in a video game?
