Why don't you remember your passwords?

As an IT Pro one of the most frustrating things that I have to deal with is people who forget their passwords. Some people cannot even be bothered to remember, and they have others remember their password(s) for them—especially executives, which I believe is very irresponsible for such a position, as well as a bad example for their subordinates. IT Pros tell you continually to write them down and keep them is a safe place (NOT in your computer), and yet they are treated as trivial.

I know it sounds like I’m just bitching here, but I cannot put a number on the times that people have been put into some serious trouble/downtime, and even almost fired because of this error that is SOOOO simple to prevent.

So…why don’t you remember your passwords?