Reasons Santa must be God:
He delivers presents to children all over the earth in one night, so obviously he is all powerful.
Millions believe in their hearts that he exists.
He has a white beard, so obviously he is old, so he must be very wise, therefore God.
I cannot accept a world without Santa, I know in my heart he must exist.
The poem that starts "twas the night before Christmas" speaks of him, it's been around a long time, many have read it, proving his existence
He has a magic sleigh and flying reindeer, and thousands of elves working for him, therefore God
And the number one thing that proves Santa must exist:
No one can prove he doesn't .