Because the world changes. You don't change, you get left behind, sometimes in very important ways. (For example, my wife's licensing board now sends the rene

Because the world changes. You don't change, you get left behind, sometimes in very important ways. (For example, my wife's licensing board now sends the renewal stuff only by e-mail, not snail mail. There are a few old-school people who have to get someone else to get the form for them.)