Like anything else, like you say they come with good and bad or maybe its sad.
Its real hard when you loose your pretty Drake (could have been a poisoned rat or snake) and have to wait forever for one to hatch, grow up and take over the flock of ducks.
We have Muscovies and they are definately family ducks. Its wonderful to watch them, be them. I let them be ducks, mate, hatch their own and take care of the ducklings. I only intervene when there is turmoil between the ducks over the ducklings or the nests. Once you get ducks started they pretty much take care of themselves. They only need you to hand out extra food, keep the waterers clean and full and the duck pool clean and full in my case, cause we don't have a pond.
Oh, and the babies need their split peas cooked and mashed and off course I have to grind them up some seed that I mix and give them some to start them off. Then off course I like to give them extra greens, daily when babies and chopped fine, at least several times a week when older. Everyone including us gets some Nutritional Yeast in their seeds (for us its pop corn). Oyster shell for chickens and Ducks and Quail, gravel (fine for the babies) on the pathway and every bird is happy. And that makes me happy. Then I can sit back and watch them tromp around the back yard being chickens and ducks. The quail do their own thing
Not to mention, between the chickens and the ducks, we have only had 2 snakes and they had killed one and didn't eat it or I wouldn't have known about it. The other one was hiding under my 4x4 spare pen. When I moved it, the snake slithered for cover as fast as it could move, cause it must have feared my ducks. THEY had been hanging around there waiting for it. They knew, I should have. Last year we killed over a dozen large snakes, this year none. Love my flock.
Had a problem with rats last spring, since the drake died, but now his young one is mature and haven't seen any new rat leavings.
So as you see, it does get easier once they get outside and grown. Actually I never brought mine into the house. I was told they were 6 weeks old when I got them and come to figure, once seeing their ducklings later, I think they were only 4 weeks old back then. They did fine in their duck house though, the weather was warm then. One thing I did learn, they like Kale but it makes their Poo really stink, so I give them Romaine mostly. I give them scratch free choice and that makes their poo not so watery. I was real frustrated with the ducks when we first got them, but it gets easier, give them time to grow up and be ducks.
Enjoy your ducklings, they won't stay little for long. They grow so fast compared to chickens.