As we progress as a species, and learn more about the history of our species and of religions, we are seeing that religions are just a series of fantasy stories that are adaptations and plagiarisms of older religions which are all simply allegories and personifications of the Earth, sky, Sun, Moon, stars, planets and seasons.
Christianity adopted and adapted all of its stories and holidays to fit in with older Pagan festivals which were probably also all just copied from stories past down through generations of hunter gatherers, looking up at the sky around their camp fires at night, recognising the turn in the seasons, the constellations and planets in the sky at different times of the year and the importance of the Sun. I’m not sure if there’s a single authentic original holiday that Christianity didn’t just take from further back in past Paganism.
Religions felt they were needed to be the overseers of morality within society before governments, statutory law, courts, lawyers and Police forces were around. Now, we are seeing that we can live moral lives without the need for religion to keep us in check, just through normal human decency.
Religions also felt they were needed to control the masses, to band them together to fight, invade and conquer, and to convert and again control the new masses. Now that’s done in the name of countries or political ideologies.
Although, there are still some people living in the Dark Ages and following their religions. I predict that in 300 years from now, nobody on Earth will follow any religion. They will just uphold ancient Pagan holidays as traditions, like ‘Christmas’ (although a Christian word and Christians like to think it’s their holiday, it’s certainly not a Christian holiday), Pancake Day, Easter etc. all which have much more ancient history and iconography than the Christian bastardisation of them all.