Too many of us , including myself, have started to contain and make our writing too rigid by sticking to one POV when we wanted to have more.Readers really dont give a damn as long as they get a kick out of a good story.
I see your point. But readers do give a damn when it diffuses the focus or leaves them suspended in mid-air, floundering to figure out who is telling them what. And that's what happens to many writers when they get sloppy with POV.
Some writers--Ann Patchett is a master, check out
Bel Canto--do brilliant segues from one consciousness to another inside the same scene. There's nothing morally wrong with switching POV within a scene, but it requires excellent craft and a good reason for asking the reader to follow you.
There's a big difference, though, between simply swapping POVs and writing in an omniscient voice. In Tolstoy or Henry James, the omniscient voice (or as James would have it, the "centre of consciousness') IS the POV. The fact that it can dip into the thoughts of various characters doesn't mean that there has been a switch in POV; it simply means the godlike narrator has decided to peer into someone's head.
I think it would be beneficial if everyone started out writing in first person, as there is a clarity and discipline in first person: you know exactly what can and can't be told. After that was mastered, then writers could move on to more challenging tasks. Most POV swapping I see within scenes (and believe me, I've seen a buttload) is just laziness and self-indulgence.
I recently finished writing a novel with three third-person POVs plus a possibly unreliable, possibly omniscient, intrusive narrator who leaps in whenever he/she pleases--often in the middle of important action, suspending what the reader ought to care about (if I've done my job)--and then holds forth on preposterous topics, like a commercial break at an intense moment on a television show. I think it works. I think it's funny and alarming. But I wouldn't recommend it as a model to anyone--I was on damned thin ice, and for all I know, I may have fallen through. (We'll see if it sells.)
My point is, your mother was right. You
can put your eye out like that. That doesn't mean no one should ever run with scissors or play with matches or Evel-Knieval their way over the Snake River Gorge. But you won't catch me
recommending that they do any of those things.