To many to remember
How are we going to remember it all? At some point you are going to end up locking yourself out as you create more accounts.
Increase your security
I have notes everywhere
Do not use sticky notes on the wall or monitor because anyone can see the passwords. You are going to run out of space and have a giant wall of paper collecting dust.
What plan do I get?
If your a business. Then get the plans for you and your team. It will make things easier to manage so they do not have to keep asking for passwords. That alone will save you time in the office. You can provide the right permissions to your team since they do not need every password you have. Only give them access to what they are authorized for.