While the original phrasing might have been tongue-in-cheek, I'm not sure that it isn't a subject that deserves wider consideration - not on the IQ of zooms vs primes, but on the do you or don't you front.I know that here are lots of pictures I know even as I take them that I will never 'use' (as in print, submit for publication, competitions etc) but I still take them - mostly to remind myself not to be so lazy next time! It is very frustrating to have a great scene and the wrong lens - I once found myself in South Africa having nipped out to the local game area to take some early morning snaps of wildlife, but it was dull and foggy - and not in a good way - so I drove to a more elevated place, came out above the heavy mist, and looked out on a sea of cloud skimmed by the sun with the conical hill-tops poking through like islands - and only a 400mm lens!!! ;(((
Some shots are about content, not IQ, and whatever lens you have on your camera is better than none at all, but as you know there are some scenes that you might never see again, if you're like to be annoyed about missing them, then you really should take a reasonable coverage of focal lengths - or just enjoy the experience, which most of us would find the hardest option