Unrelated but related - where does a ‘god’ fit into all of this? In other words, why do people and various religions still believe that ‘god’ made the universe? Heaven and earth?
Religion is malleable and the durable ones are unfalsifiable. They were told to believe it, or came across it and something got sparked in them. Maybe some god(s) caused the big bang(s)? Who knows? No evidence connects religion to reality.
God is defined as existence itself. Most people believe in the supernatural concept of free will. These are topics outside the realm of the scientific method though.