Why would you give thanks to random chance? Being a Christian and "forgetting" to thank God on thanksgiving is incongruous. Particularly when you are President and your speech is planned and televised.
http://news.yahoo.com/obama-leaves-god-thanksgiving-speech-riles-critics-173023786.html "Three of the Republican presidential candidates â Mitt Romney, Newt Gingrich and Rick Santorum â issued Thanksgiving statements that omitted any references to God"
Obama doesn't read books, Obama doesn't go to church, Obama cancels prayer breakfast. Obama doesn't buy his children Christmas gifts. This is a very strange man.