Why is important to study religion?

Religion connects you to the majority of mankind, past and present. No ancient society ever existed that did not believe in the supernatural. Those who dismiss belief may be compared to an astronaut floating away from the lifeline.

Also:

1) Religion may assist you in overcoming peer pressure.

2) Religion will often add to your self-discipline, whose lack has led our society to epidemic obesity, drunkenness, depression and ennui, divorce rates, violence etc.

3) Religion may provide you with a whole additional layer of education.

4) Religion may provide emotional fortitude, helping one overcome hardships.

5) Religion will provide a sense of identity and a community, with its ambiance and mutual help.

6) Religion provides a life and a sense of purpose.

See also:

Can you show me that God exists?

Is there evidence against Evolution?