Religion may have at one time had a purpose, as a kind of "glue" to hold societies and cultures together, but today that is no longer relevant.
Today religion merely poisons peoples' minds to different cultures. In the past that was OK to some extent because of great distances between peoples. Today however, xenophobia as fostered by religion simply is no longer tolerable in a global society. This can be plainly seen in the hostile stance between Muslim and Christian fundamentalists.
Christopher Hitchens is right, (even if his writing style may come across as a little bombastic) Religion has seen its usefulness come to an end. The sooner we as a society can shuck off this anachronism the better.
CyrusThePersian