Why do Wizards Even Need House Elves?

What chores can’t just be done with wizard magic?

There are levitation spells that could be used for tidying. We see Molly chopping food and washing dishes with magic. We see spells that dry clothes and clean messes so it can’t be much of a stretch to have a spell that cleans clothes. You can’t make food appear but you can prepare and cook it with magic. We never really see any energy cost of magic in the books so it’s not like doing a bunch of chores with magic would exhaust you.

I know it’s supposed to indicate a prestige if you have one (problematic as that is) and their sole purpose is to serve (even more problematic) but …why? They seem pretty redundant in a world where it can all be done by regular wand magic.