Fundamentalism of any kind is inherently against religion. Religion stresses the belief that human understanding, while magnificent, is still fundamentally incapable of understanding the incredible complexity and ambiguity of the world and of God. Yet fundamentalists claim to have the answer wrapped neatly in a set of ironclad, unchangeable rules. The nature of God has only been conveyed to man through the imperfect medium of flesh, and as such, it is impossible that any religion has it entirely right. The only way to find God is to seek him yourself, through your own path.
Religious fundamentalism is the highest form of hypocrisy.
It consists of reading without understanding, following without thinking. It takes from a large volume of spiritual thought and selects certain absolutes from which it develops its beliefs. The rules they choose have less to do with their importance in the religion and, not surprisingly, more to do with the personal motives and agendas of the fundamentalists. It is this kind of thinking that has allowed Christians to take the passages in the Bible, which deal with spreading their religion and use it as an excuse to invade countries for personal gain or Islamic fundamentalists to use archaic passages in the Koran to deny basic human rights to females or countless other tribes to slaughter and persecute those with a different belief structure than themselves as an excuse to wage war. There is nothing wrong with religion, but everything is wrong with religious fundamentalism.