I love my mommy because

Recently, I've started playing the "why does mommy love you?" game with Amy. It goes something like this.
Does mommy love Amy because she's BEAUTIFUL/smart/have blonde hair/etc.? Nooo. Amy is beautiful but that's not WHY mommy loves her.
Does mommy love Amy because she's a good/obedient/kind/etc. girl? Nooo. Amy is a good girl, but that's not what makes mommy love her.
Then why does mommy love Amy? Because Amy is MY DAUGHTER!!!
Recently, Amy came up with her own version.
"Mommy, does Amy love YOU because you are a dog? Noooo. Does Amy love you because you are a fish? Nooo (gales of laughter). Amy loves YOU because YOU are MY DAUGHTER!"