I know lots of people who claim that lyrics don't matter to them. I'm the opposite. I mean, they don't have all have to be Bob Dylan, or Dan Bejar, or Nas. They don't have to be profound. Or poetic. But bad ones can ruin a song for me. They can be silly, they can be gibberish, they just can't be bad (whatever that means).
Lyrics may be inconsequential to some pop music, but even the stuff that seems like a trifle can bring about something unexpectedly revelatory either as an insight or a hook. Whether or not they matter to you, lyrics will have a place in songs of all stripes (save a revival of Herb Alpert and the Tijuana Brass-inspired easy listening jams). But filling an empty page with words can be just as much an obsession as it is an obligation, and for some artists, it's often a painful roadblock to putting a song to bed.