Many years ago I used a forum that autogenerated usernames from a hash of responses to questions ( player name, age, city etc ) in a similar manner to those 'po

Many years ago I used a forum that autogenerated usernames from a hash of responses to questions ( player name, age, city etc ) in a similar manner to those 'porn name' algorithms. Which was quite a relief in place of the usual 'invent a unique name' mindblank I often suffer. Similarly my banks issue me my website user strings. Why do so many website permit users to choose? Forcing the user to write-down their assigned designator might lead to better security, too, since they would seem at that point more open to writing-down a strong password.