Writer Cover Letter. However an excellent cover letter not only provides an intro for your application, but it also enables you to tell an employer what it is all about them that makes you want this kind of job with their organisation. It will not be used to repeat info that is in your resume unless of course it is a very specific ability or experience that provides value to the job. It may not be just an edited straight down repeat of your resume.
For you, the worst part regarding writing cover letters is usually how formulaic they really feel. You're tired of writing exactly the same letter over and over, slightly customized for each position, and if you're tired of sounding like a robotic. Especially if you're working from a template, things could get dull fast.