Why humans need religion?

Religio (L) comes from roots which mean Sustenance. Everyone is born... everyone dies... but in between needs sustenance. That is religion.

Religion, not the property of groups and organizations, but a self-mastery. A skill to do everything expected (life, children, parents, relationships, work) and be above it.

The key phrase is "atitah" in yoga theory. You do the required stuff, but you are beyond those duties. You grow beyond them. This comes through self-realization and Kundalini awakening. [Again, not the marketed, for charge kinds]

All the best my friend.