It makes sense why they do it, but it's still wrong. I (have to) believe that there are people out there who want the dogs who are on meds, who can't be left alone very long, who have medical issues. I totally get finding a dog who fits the person's lifestyle, but pet ownership is not something you can turn on and off. Rescues should be fully transparent on the pet they are adopting out, otherwise you get unhappy people and unhappy pets.