As the owner of 3 small dogs I agree. I rarely pick up poo in the backyard and only step in it 2 or 3 times a year. I don't know where it goes, and don't really care. I guess the birds or something eat it, not my problem.
HOWEVER one of the three takes giant poops. He left one on the rug the other day, and if I hadn't caught him in the act I would have thought someone broke in through the back door, took nothing, and left a giant steaming pile for me on the rug.