Hope and Fall
Satan is the devil, he tries to make our lives painful and even worse when we die. If our world is only pain and evilness people will "adapt" to survive and support this and they won't suffer anymore (or at least they will suffer less) and Satan doesn't want that.
If he every year makes gifts to all the people in the world he increases the hopes of people and also brings them happiness to survive in this world. I think this is "good" to him because he can make their lives even more painful. Think about this: you are a poor person who lives in an abandoned building. One day this building is destroyed and you lose your "house". This person won't suffer much because he is already suffering, but if this person was rich and one day he lost everything he would suffer a lot. The "fall" would be bigger and Satan wants that. He brings hope and happiness to us to suffer more and have a bigger "fall" when we die and go to hell.
Also, he can play with the "coal" gifts: you were waiting all year long for your gift and on christmasChristmas you get coal. This would be very disappointing.
Also, you can use christmasChristmas to make people sad indirectly. I am not sure but christmasChristmas is the day with the most suicides because people suffer when they see happy families and they are alone.
Sins
Satan uses christmasChristmas to increase the sins of people and corrupt their souls.
On christmasChristmas people are very:
- Greedy: they want the best gift.
- Envy: some people can't afford good gifts and others can. These people are envious of the rich people.
- Gluttony: in a lot of countries there is a tradition of eateating a lot of yummy meals and sweets on christmasChristmas, easterEaster day and new year.
- Sloth: some people take the day free.
- Pride: people sometimes buy the most expensive gifts and decorations for christmasChristmas in order to show them to their friends.
- Lust: from Wikipedia:
[..] lust could also mean simply desire in general; thus, lust for money, power, and other things are sinful.
PeolpePeople want material things.
- Sadness: like I said in the Hope and Fall title some people are very sad on christmasChristmas for not having a family or friends.
Reduce Charity
When Santa gives presents to poor people other people (like rich people) don't give presents because they already have one and charity is one of the seven virtues of Christianity. Satan is trying to eliminate one of the seven virtues of people.
Absolution
Satan is the evil. Sorry, but I don'tdidn't read The Holy Bible so I don't know if this is true, but God is all mighty, right? So... Why doesn'tdidn't He destroy Satan? My idea is that Satan isn't so bad. Every year Satan regrets his sins making gifts to all the people in the world and bringing them hope and happiness. This way God can't "purify" or destroy Satan, because he regrets his sins every year.
Christ's attention
Christmas is the birthday of Christ but Satan creates the "Santa" character to make Christmas about him and not about Christ. A lot of people don't know that Christmas is the birthday of Christ but they know about Santa.
Materialist people
Satan makes material gifts to people instead of a "spiritual gift" like absolution. People try to be good people in order to get a material present on christmasChristmas and not the absolution of their soul. He makes people more materialistic.