Back then they believe in Fire, Sun, Ghost etc. Now they know Fire is just fire, Sun is just a star, and they believe in different kind of Gods instead. In futu

Back then they believe in Fire, Sun, Ghost etc. Now they know Fire is just fire, Sun is just a star, and they believe in different kind of Gods instead. In future they would probably not believe in Gods and came up with another kind of unprovable thing. Actually, those are just indirect abstract of fear|hope|unawareness. Basically those human weaknesses. So I think Religion will exist forever.