system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why do wizards even have house elves? From what we've seen magic can easily be used to do most household chores, so why bother with an elf? Is there anything wizards actually need or want that only house elves can do?
gpt
There's really not a lot a elf can do that a wizard can't do themselves. But that could be said for most domestic servants. The family of the house *could* cook their own meals, change their own sheets, drive their own car, or restock their own pantry, but they'd rather have someone else do it for them. It's the same with elves.

Also, a big one is food prep. Hogwarts for instance has a small army of elves preparing the food for the meals, which is then teleported up to the Great Hall. Certain parts of the process can be automated, but you still need someone at or near the stove to keep things in order; there's no going "poof, it's a ham". If a wizard wants a quality meal at home and doesn't have the time to cook it themselves, an elf or elves need to get involved.