Something that I've always wondered - Is everyone not from the Warbreaker world a Drab? Is a breath 'something extra' they have due to humans in that world being of Endowment? If a Breath makes you more resistant to disease and be more vibrant and see color and art better, and if you've had it all your life, then the loss of it may seem unnatural, but that doesn't really say anything when you've adjusted to having this slightly more vibrant life for your whole life.
If the breath IS 'something extra', then the act of gathering large quantities of breath is at least somewhat less terrible, but if it ISN'T like that, and giving up Breath is giving up a piece of your soul or something, then the whole thing seems even more sick sick - with gods and the rich not only living a life far more beautiful and wonderful than everyone else, but doing it by constantly consuming the souls of those beneath them.
The fact that Returned need to constantly consume Breath makes the whole concept of giving them a constant diet of it seem such a horrid waste, considering how limited Breath really is - one person will live their entire life in relative misery for a week of some pampered godling's life. And, for those that hit the extremely high heightenings, they seem flat out monstrous - the relatively minor benefits after agelessness all require tens of thousands of Breaths, all for the ability to sparkle, be a better artist, and be better at Commands.