Driving a car is dangerous. Crossing the street is dangerous. We do those things anyway. Sometimes walking into a dangerous situation is our best course of action. Almost every book I've read on OBEs says that OBEs have a profound impact on people.
People come away with a new attitude toward life and death.
We might use it as a spring board for developing psychic abilities. If science can reproduce OBEs in the lab, they may discover the scientific laws governing mind and matter that psychic abilities are only hinting at today. Some people have even suggested the possibility of using it for industrial espionage, covert intelligence and similar applications. Above all in importance, I believe astral projection can help us become more spiritual. Spirituality should not be used as a license to justify immorality, nor should it be forcefully pushed on other people.