Just because one is lumped into a category does not mean they truly fit into that category. Just because a human male happens to have created offspring, that does not make him what is celebrated on Fathers's Day. The epitome of an honored father may not even have children. An uncle, adopted parent, big brother, mentor, friend's father or even a neighbor may deserve a Father's Day card.
Despite this modern day and age, fatherhood responsibilities still are held dear by some individuals. Even in the social and legal atmosphere of South Dakota, the number of single fathers is growing.