The only time I use them is for very temporary situations. For example, I put one up today on a demo site I'm doing for a client. The URL they have is to an obsolete demo. Instead of sending them a new URL and going through the "Why doesn't the [old] link work?" thing, I just redirected them to the new URL using the meta redirect. I'll take it down in a few days and no one will be discomfited or confused. The redirect page takes 1 second to redirect, and has the word "Redirecting ..." on it as its only content.
(First question from one of the client organization's members: "I don't like the site address, it doesn't reflect who we are." The site URL was to a demo page on my site. If you have more tech-savvy clients, you won't need to go to these lengths.)