You are my niece, which gives you the official right to ask me for treats without feeling guilty. I am your aunt, which gives me the official right to spoil you without taking responsibility. – Unknown
The best thing about having a niece is that we can spoil her without feeling guilty and that we can share a load of fun without having to enforce any responsibility on her. This puts aunts and uncles in a hot spot because it is easy for them to win the love of their niece and to make her think they are the best adults in the world.