system
Given the following post, respond as if you're commenting on Reddit:
human
[LotR] Why do wizards take the form of men, rather than dwarves or elves?

In many ways, Gandalf seems closer to elves than to men.
gpt
Because it was in Men that hope for defeating Sauron lied. All other beings were bound to Arda and its fate; only Men had the ability to forge their own destiny. Since the Istari were sent to aid (indirectly) in the battle against Sauron, they needed to assume a form that would best interact with Men.