The 1583 form is a big hurdle for potential customers to get past. You have to get it notarized, which is something most people don't do regularly, so they have to spend time looking up a local notary, and there's usually a small fee involved.
Also, of course, then you have to contact everyone who sends mail to get them to send it to the new address. (I did it as part of a move, so I had to do that stuff anyway.)
Also, of course, then you have to contact everyone who sends mail to get them to send it to the new address. (I did it as part of a move, so I had to do that stuff anyway.)