In A Christmas Carol why does Fred continue to see his uncle?

He (Fred) loved and felt sorry for Uncle Ebenezer and swore to continue to ask him to join he and his wife every Christmas despite the fact that Scrooge had cut him off without a penny. Scrooge was later to hear when the ghost of Christmas Past took him to Fans home his sister Fan beg him on her death-bed to are for "her boy" and this is the very first time that Scrooge realises what errors he has made