In Southern Africa, it is not uncommon for grandparents to raise their grandchildren and great grandchildren. There are many reasons for this, other than the fact that traditionally, our families are sometimes very extended. I mean like even if your own grandparents were second cousins a zillion times removed, you're still family. As it is, I live with my cousin's son and a very distant cousin's grandchild. We have a crisis with (productive) adults dying of AIDS. Some grandparents provide child care care but receive money from the parents to take care of the family because they had to go to the city to work. It's also very common that children born out of wedlock are left with their grandparents when the parent marries. Sometimes, it just has to do with accommodation. Sometimes, unemployment and/or substance abuse are to blame... Other times, any number of reasons are the cause.