I come from a huge family. Historically we are the worst family in history at birthdays and it is partly because there are so many, so many siblings, so many nieces and nephews, add in a few step parent situations, it is not possible for some of the family to mark all birthdays because they can't afford it, it is also partly to do with how we were brought up. There are some low level rifts so that some people will mark some birthdays and not others. Some people will get offended more easily than others, and will make a huge issue out of their birthday being forgotten and so they are more likely to be marked. Some people don't want their birthdays marked and so bury their head in the sand generally and don't mark any. But the main issue is sheer number and it not being affordable or feasible for some people to try to mark them all. How do other people with large families deal with this just out of interest?