Breastfeeding

So I came across this picture on Facebook and my first reaction was that this kid looks to be around 3 or 4 which is a little out of the norm but hey, to each his own but then I read the caption. In the caption the woman states that she no longer produces milk yet she continues to let her kid suck on her boob for comfort. There's nothing wrong with wanting to soothe a child but I wouldn't personally let them suck on my breast that is no longer producing milk. I'm all for breast feeding and I even plan on doing it myself but after I stop producing milk there I wouldn't feel comfortable with them using my boob as a pacifier. Everyone is entitled to raise their children in the way they see fit but this just seems very strange.