As far as religious classes are concerned, I took a "World Religions" class last year, and a somewhat more focused "Western Religions" this semester, and enjoyed both. The former was teaching a (albeit very brief) history, philosophy, beliefs, and practices of Judaism, Christianity, Islam, Hinduism, Budhism, and a couple other East-Asian ones I can't put a name to right now. And frankly, it was all stuff I wish I'd learned back in high school. It would have done me a lot more good than knowing what Columbus or Jaques Cartier did. And both my teachers were pretty good. Neither one demonstrated any bias/favor towards any particular faith, and presented them all equally, although it was obvious that they knew more concerning some of them than others. Which is normal, really.
As someone already stated, regardless of one's own beliefs (or lack thereof), religion plays a large role in many people's lives. Maybe even a majority of people. Understanding their beliefs can help one to understand how they think, and why they act the way they do. Understanding others can help reduce conflicts. Probably not eliminate them, but reduce, perhaps.
As my teachers pointed out, there is a difference between Religious Studies and Theology. Religious studies is the study of religions, whether all or one in particular, from an objective view. Theology is also the study of religion, but incorporates/implies belief or profession of faith. Religious Studies is important for all and should be taught in all schools/universities where possible. Theology, on the other hand, should be taught by their respective Churches/Religions, and are only as important to any particular person as their personal beliefs are. For some very, for some not at all, but it's their own choice to study/attend as they will.
Personally, I consider a religious element to be an essential component of education specifically for that reason, but also to help people realize that what *they* believe is NOT the only world view, may not even be in the majority.
Oh, and a basic course on nutrition ought to be mandatory too, but, like for religious studies, the people who most need it would probably ignore it anyway.
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Zitchas
The Wanderer