Some people do. I used to have a local 24hr diner that had the carafe that sat on a burner all day and there was just something about the tar black, bitter abyss of that coffee that I liked.

Once I tried good coffee that was bitter, and floral, and nutty, and somehow also a little sweet; really just a well balanced flavor, I understood the difference.

Everyone has different tastes and it's probable better to say coffee that's only bitter is not quality coffee bean coffee.