Why Western Muslims leave a pleasurable life for jihad

Western Muslims living in the most free and wealthy countries in the world are leaving, or returning, in the thousands to the Arab world in a search for meaning in their life – or an Islamic revival that fits within their traditional cultural religious values.

Samuel Huntington summarized in The Clash of Civilizations and the Remaking of World Order, “As the pace of modernization increases, however, the rate of Westernization declines and the indigenous culture goes through a revival.”

How is this possible?