In many job positions, cover letters are optional, and thus many applicants wonder whether they really need to write a cover letter. In any case, it is always better to include a cover letter rather than not. Even if a cover letter is not required, it usually increases one’s chances of employment since the admission committee or your potential employer has a perfect chance to know you better and to get acquainted with you closer. If you want it to be perfect, just write 'help me write a cover letter' and you'll get qualified help.