Some don't because it's directly traceable to a pagan custom.
I suspect that some, possibly a majority, of those who cite that reason may actually be more influenced by the fact that putting up a Christmas tree is a pain in the rear, and "It's a pagan custom, you heathen!" is just a convenient excuse for not doing what they didn't really want to do anyway.
Germany has Christmas because some People in Germany are Christians and Christians celebrate Christmas
yes, they do.
yes, some christians in Iran celebrate Christmas by decorating their house with a Christmas tree.
Israelis do not celebrate Christmas. If they would, they would be Christians. :)
Christmas shows, whether of a Christian theme or other theme, are available for everyone. There are none that are available only to Christians.
It isn't. There is nothing in Christian belief that says one must decorate a Christmas tree. Christians simply enjoy the fun of decorating a Christmas tree as much as other people do. Some Christians like to use other symbolism to remind them that Christmas celebrates the birth of Christ, but there is nothing that says they must decorate a Christmas tree.
Many Christians think that Christmas is a holy day, and many Christians believe that it is a holiday. I would say that most of them think it is both, but some of them think that it is only one or the other.
Most Christians are Coptic orthodox, some of them are catholic also but the majority is Coptic. The Coptic Orthodox church in Egypt celebrates Christmas on January 7th of each year.
Most Egyptian Christians belong to the Coptic Orthodox Church and they have some very unique traditions for Christmas. Christmas Day isn't celebrated on the 25th December but on 7th January (like in Ethiopia and by some Orthodox Christians in Russia and Serbia). The Coptic month leading to Christmas is called Kiahk.
Christmas, Easter, Good Friday, Pentecost, Ascension Day...
they dont celebrate christmas
Some people don't believe in Christmas because they have a different religion. another reason is people don't like the word christ in the word Christmas and some christians don't like the santa stuff