The problem with "Low Priority"

I've always thought it was ironic that low priority emails are the ones I see first in my inbox.

Marking something with a low priority makes it stand out from all the others. Doesn't that make it implicitly high priority?

One man's urgent is another man's low priority, and vice-versa. I think it's better to leave the metadata to the machines and avoid marking emails with a priority of any kind, high or low.