Today is my 24th birthday , and it is also my first birthday without my father . I did n't really want to celebrate it at all , but my sisters and my mother convinced me that I should . It is also my brother in laws birthday as well .
According to the above context, answer the following question.
Why would my mother and sisters convince me that I should still celebrate my birthday even though I did not want to ?


They knew my father would want me to still celebrate