system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why does a wizard like Godric Gryffindor need a sword?

Isn't a wand infinitely more powerful and dangerous?
gpt
Stabbing things. And what's better than a regular stabby thing? A *magical* stabby thing.

To expand: Back in Gryffindor's time there were presumably more magical creatures running about. Magical creatures often seem to have a resistance to magic, making a wand less useful than one would think in that situation. They don't seem to have a resistance to physical damage, making a sword *more* useful in those situations. What's better than a regular sword?  A magic sword. Gryffindor's sword is goblin-made and enchanted to absorb magics, strengthening it to use against attackers. This makes it extra effective against magic things.