Good Grief.... Charlie Brown.......
It's nice to keep little children believing as long as possible, and seeing the sparkle in their eyes, as they receive the presents, brought by Santa.
It's a harmless tradition that revovles around the spirit of Xmas, and the good feelings that are engered in people. How quickly, those good feelings vanquish after the holidays.
Peace and goodwill towards all men/woman.
__________________
"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).