I don't get Fathers' Day or Mothers' Day for that matter. Having children is the single most selfish thing people do in their lives. Everything that is born will die and almost everything that is born will suffer great pain in their lives at some point, whether that be physical or emotional or both. The risk of having a child that will suffer from birth is certainly high enough not to risk it. So people have children for one reason only, to satisfy their own instincts and desires. Therefore, I really don't see why they deserve a special day every year in which the people they have brought into this vallis lacrimarum are expected to thank them for doing it and, on top of that, buy them dinner.