Against certain threats, actually a pretty decent idea. Worthless against your roomate or the office’s contract cleaning service; but hackers aren’t going to access a written list(unless you leave it in webcam view) and you’ll be able to use less dismal passwords since you don’t have to remember them. If your problem is attackers brute forcing your accounts from offsite, you could do a lot worse.
For local access control; just don’t. IT hates having to have ‘the talk’ when we find your collection of passwords under your keyboard.
