The problem arises when you are expected to memorize many different passwords, for different organisations.
Even the GRO ask you to register with a password for ordering certificates.
However, we are all gradually becoming more security conscious. I now shred all waste that includes my name and / or address.
I have also noticed that now most often, instead of entering your password, or internet number, you are often asked to select from a drop down list, ie the 1st 4th, etc. This is presumably a security measure in case anyone has cloned your PC.
One bank asked me to memorise a date, name and place, and it was suggested I use a memorable occassion in order to remember the answers
regards