This is an interesting point. The sentiment is flippant, the aim being primarily to indicate the film is of average interest, but I for one do not want to “pass” any of my time. It is too valuable. I take care to plan how I use it, and some of that planning includes watching films of all kinds, good and bad.

No film — even a bad one — is ever a waste of time for me, because, as a writer of fiction (my primary writing outlet), the study of storytelling failure (whether film, novel, TV, theatre, etc) is instructive and vital. Often more so than the study of success.

At the same time, it is always my deepest desire, when sitting down to watch any film I haven’t seen before, to be moved by the all-too-rare state of cinematic artistic transcendence to which you refer. That’s why I return to the greats so often (like Leone).

Sadly, those of us who think in the way you describe are, I suspect, in a minority.