I've only used the laundry machines and hampers, not the clothesline and washer. I've also used some of the shelves and objects. I've definitely used the clothing and hairstyles, some of which, I voted for. I definitely voted in that blue shelf and some of the other objects.
I add it nearly any time that I have the space. I wouldn't say that I "enjoy" it but it adds realism and another thing that they need to manage. On a rainy day or at night, they'll get the laundry going. I'm not always great about moving the laundry promptly. Sometimes I'm on top of it and sometimes, it is very much on the back burner.
I have a theory that it breaks more when I pause the game and since I usually pause quickly while moving around or switching to a different sim, I need to be a bit careful or it breaks often. I always clean the lint filter on the dryer so it doesn't catch on fire. I think they added that because people were upset about Dangerous Stuff losing, so it's a new way to die.