I came across this "letter" on social media a few years ago and I saved it because I thought it was so well written, I couldn't express it any better.
There is magic in believing!
You asked a really good question, “are mom and dad really Santa?”. We know that you want to know the answer, and we had to give it careful thought to know just what to say. The answer is no. We are not Santa. There is no one single Santa. We are the people who feel your stocking and wrap the presents under the tree – just as our parents did for us, their parents did for them, and you will do for your kids someday. This could never make any of us Santa, though. Santa is lots and lots of people who keep the spirit of Christmas alive. He lives in our hearts, not at the North pole. Santa is the magic and love and spirit of giving to others. What he does is teach children to believe in something they can’t see or touch. Throughout your life you will need this capacity to believe in yourself, and your family, and your friends, and in a higher power. You’ll need to be able to believe in things you can’t measure or hold in your hands. Now you know the secret of how he gets down all of those chimneys on Christmas Eve, he has help from all of the people whose hearts he has filled with joy. With full hearts, people like mommy and daddy take our turns helping Sandra do a job that would otherwise be impossible. So no, we are not Santa. Santa is love and magic and hope and happiness. We are on his team, and now you are too. We love you, and we always will.
Love, Mom and Dad
Wishing you and yours a very Merry Christmas and a Happy New Year!