Religion is philosophy and politics created by human beings. Extremists want to deny it, but men wrote all the scriptures and all religious books.
God did not step off a cloud, pick up a quill and write the religions.
As long as people live in fear of speaking truth, fanatics will impose THEIR "religions" on the masses. It is the most powerful tool for controlling the minds, bodies, labour, property and wealth of great numbers of ignorant and fearful people.
When you can make people believe you speak for God, you can "marry" their little daughters, take their hard-earned money and sing them into oblivion.