Perhaps I'm fickle, perhaps I am offensive but I will never celebrate something I do not approve of.
The true first origins of Thanksgiving was handed down by the Crusades for Christ. The ensuing struggle pitted Muslims and Christians at war with one another, I am Christian by the way, yet I do not approve of the Crusades and the slaughter of many. When Jerusalem feel Pope Urban proclaimed the day of thanks, the very first true origin of Thanksgiving throughout Christian Europe.
In November 25th, 1491, Santiago, a Spanish general during the Spanish Inquisition, finally threw out the Muslim Moors in Spain after occupation for nearly 700 years. Seizing the last Muslim hold of Granada the pope of Rome proclaimed this day as a day of "thanks."
Handed down orders to Queen Elizabeth to massacre any Moors, Berbers, Turks and Arabs who resisted Christianity. Now people today eat turkey as a way of giving thanks handed down from the pope from people who I am related to ancestrally wise even if I do consider myself Christian first.
That's the true origins of Thanksgiving. Now before you guys jump down my throat let me say giving thanks is important we should do it everyday. And hell even my Church decides to celebrate the holiday, but you know what? I don't and don't agree with it and never will. The point of me posting this is to let you all know why some don't celebrate Thanksgiving, well here's my reason.
If you're interested more you can read here. Have a good 25th.