The point of adding a cover letter is to stand out. If you don't, you're far more likely to end up ignored in the avalanche of resumes, especially considering how poor of a signal most resumes are.
I'd rather have a chance to actually get the job, if it's one I'd find interesting, and writing a cover letter is easy. But you're free to be ignored if it makes you feel better.
I'd rather have a chance to actually get the job, if it's one I'd find interesting, and writing a cover letter is easy. But you're free to be ignored if it makes you feel better.