使用CHAR over VARCHAR的任何好处？

CHAR is stored as a fixed length string, VARCHAR is stored as a variable length string. I can use VARCHAR to store a fixed length string, but why people still want to use CHAR to store a fixed length string? Is there any benefit of using CHAR over VARCHAR? If none of benefit, why mySQL database doesn't remove the option of CHAR?CHAR is stored as a fixed length string, VARCHA