On the other hand, characters who covet their adoptive daughters are just fine by opera standards -- nothing particularly wrong about that (only it's Strauss, not Puccini, Woody):
He said, “What if we do the Puccini trilogy — it’s three one-acts that are always done together? The first two, Billy Friedkin will direct. You’ll only be responsible for a one-act, a one-hour opera, and it’s funny.” You know, funny to opera people is not funny to the Marx Brothers. But I agreed to do it, because Mark Stern is a friend of mine and Plácido Domingo is someone who I have enormous respect for, and they both assured me I would be able to do it. And I said I would years ago, because these things are planned years in advance. I figured, “Eh, I’ll be dead before it happens. I’m 72. I’m never going to make it to the opera.” But it came around, and next Monday, I start rehearsal. I’ll just do the best I can and then get out of town and let them tar and feather Friedkin.
Tar, feathers, and don't forget the pea soup.