Family Trees have no essential importance to a family or to an individual in that family. Curiosity may be to governing factor in knowing ones ancestor's.Family trees help us to understand ourselves much better when we know that we are of a lineage of farming stock folk or some other occupation, or someone of importance, such as aristocracy.It also helps us find our lineage, as to which of the twelve tribes of Israel we came through.amily trees help us to understand ourselves much better when we know that we are of a lineage of farming stock folk or some other occupation, or someone of importance, such as aristocracy.