How does studying religion help in making a student's life decent?

Of all the subjects that students study, religion is arguably the most important and enriching. Religion teaches about the world, how it works, and about the people who inhabit it. In essence, you also learn a lot about yourself and your place in the world in the process.

In the process of reading and learning scriptures you can get a taste of how people tend to deal with the human condition. This gives us important understanding into the life questions everyone deals with, such as death, love, hate, and birth, and also how different peoples of the world formed rituals and beliefs in respect to those questions. With that understanding you can begin to understand why your own community practices certain rituals and why it is important to a community to continue to do so.

All religions have set rules, laws, mores, and sense of purpose in their scripture giving a guideline as to how to act, or how their world works, and a sense of how other communities were also expected to act as well. In modern society we tend to segregate religion and law, but learning about how a community has evolved to regulate and explain such process gives us insight into our own world. It personally teaches how to critically think about the world and its functions, how people communicate, how they teach selfhood and adulthood, and even how to deal with an expanding community that interacts on a global scale.

Sources: Mark Wallace. Why study religion. http://www.swarthmore.edu/religion/why-study-religion