I've always found it amusing to look at the huge number of religions that are, or have been, popular in their own little corners of the world. To me it says that mankind has a deep desire for spiritual meaning - both to make sense of world we live in and to give hope for a life after death - but because the beliefs are only in people's heads, they are different for every individual. If there really was a universal truth , you'd think people would have reached a consensus by now. Instead, religious groups are fragmenting more than ever.
LOL. In fact ROTFL.
This is what happened last time anyone tried to get them all together.
According to the New York Times, when thousands of the world's clerical leaders gathered at the second World Parliament of Religions held in Chicago one hundred years after the first such gathering in 1893, "Evangelical and fundamentalist Christian churches that are embraced by many Americans shunned the gathering on theological grounds, and the established centrist and liberal denominations, like the Episcopalians and Methodists that have usually supported interfaith talks, were scarcely visible."
Eastern Orthodox Christians came, but left en masse when they found themselves in the company of "neo-pagans," and Jewish groups withdrew when the Nation of Islam showed up. Sikhs and Hindus stayed but tried to push each other out of the convention center (physically), and the Dalai Lama astutely concluded "Nonsense!" in response to his own question: "If we have conflicts in the name of religion, can we help resolve other problems?" (Steinfels, 1993, p. 93).