What is a religion being? There is a broad description, but if we narrow this then we can say that religion, in essence, is world view with the code of rules. Without this, there is no religion.
What is the benefit?
If you are a religious person, Christian for example, you become bulletproof for Mass Media and Propaganda. Every developed country has their tools of impact over peoples minds. In Russia, the news says, that America is evil and every international problem is their hands made, also an economical situation in Russia is bad because America intruded in Ukraine. Crimea is ours. In America you can hear something bad about Russia, American news describes almost everything what Russia touches how is evil and dangerous. Trump, Russian hackers, etc. This information is against you.
After some years your country could rush you in a war. And no one won’t protest, with some exceptions. Because the nation is ready to die, is ready to war.
But if you are Christian you would never take a weapon against man. And you would have more chances to survive – you will try to emigrate, hide yourself and hide your family etc.
If we think about the causes of most curses of 20 centuries, then we could remember that fascists and communists, first of all, got rid of Christianity. They both knew that if people forget about Nobel rules, then they will be easier manipulated.
All world should be religious – most religions against killing people, and they speak up about the importance of the fight against our vices. THIS IS THE CORE. Can you imagen the world where nobody picks up a gun, Where no one is obese, Where no one commits adultery, where families are full? We keep walking to this.