I wouldn't say that one species is "better" than another. I think it's all in personal preference. I have chickens and ducks. I enjoy then all, but my ducks definitely have a special place in my heart. They're so cute and innocent and curious.... I just want to pick them up and squeeze them. And often times I do (not squeeze them, just cuddle them lol). That being said, I only have two ducks and I have 22 chickens. I had 5 ducks (3 were adult drakes that were rescued). The drakes were not very nice and the mess that 5 ducks make was more than I was willing to deal with. To me the ducks are by far more work than chickens. We culled the drakes (they were tasty) and now I have 2 left that I hatched from eggs. They are very messy. I have to change the litter in their house every other day, their water gets changed about 100 times per day. There is constantly large piles of duck poo on the back porch, and they spill their food everywhere. We have a few frog ponds that they go in and the pumps and filters constantly need cleaned/changed. That's with two ducks. Im not complaining I'm just explaining my duck care. The chickens need very minimal care compared to the ducks but that is my opinion. I love them but two is my limit on on ducks.
		
		
	 
Amen! I formerly had a Muscovy duck (I got her as a duckling) and you are correct. I had a very similar experience to yours, only I had 1 duck instead of 2, and have noticed that ducks are not as affectionate as chickens and other landfowl. I released her at a golf course next to Quiet Cannon in Montebello on 11/20/16 and got her on 9/11 on that same year. I was unable to provide the adequate care requirements once she matured, as I don't have a pool large enough for her to swim comfortably in; she's too big! Waterfowl are more work than landfowl (like quails), and I'm not getting one again, which leads to 
my opinion that landfowl (or game birds) are better than waterfowl. I mean, I choose game birds over waterfowl, since they're cleaner, easier to maintain, and I'm able to fulfill their welfare needs properly, much more so than waterfowl.
Here's my Muscovy duck swimming in her pool: 
...and here's the duck's release: 
Hope this helps!