Saint Nick solves a specific problem: Where do the presents come from over the christmas period. It couldn't have been my parents who put them at the end of my bed because they were asleep and as any child knows it's naughty not to be asleep at night. My parents, the guardians of all that is correct in the world, would NEVER be awake at night. So the only reasonable answer is the one given by my parents, the guardians of all the is correct in the world, that there is an advert for Coke climbing into my house and delivering the presents I so wished for.
Then I grew up and it just didn't seem logical any more. Burdened by the truth that may parents, now no longer the guardians of truth in the world, had played a trick on me I went into the world armed with the knowledge that all is not what it seems and that the search for the truth is difficult and long. Over time I realised that this burden was in fact a candle in the darkness of ignorance. A darkness that is in part inherited and in part constructed by the Guardians (whomever they may be) to keep me from the truth.
So you see good old saint Nick has a very specific role in society. He's a lie told by parents to bring darkness into the world of children under the guise of 'magical enchantment'. For some, he is a catalyst to see the lie but for others he is the first snuffing of the harsh light of inquiry and intellectual endeavour that all children are born with.