Reality check please.
A world without science:
No cars, no roads, no trains, planes, ships, bicycles. No factories. No power plants. No pollution. Yay!
No tractors, no carts, no farming. No food beyond hunting (with a rock and an unsharpened stick) and gathering. No fire making. No fishhooks, no nets. (just your hands, that rock, and that club)
No medicine, no beds, no houses, no huts. [Yes. Even figuring out thatch and leaf roofs is a science. A simple/crude one, but the learning and testing, and tweaking the construction
is science.]
No clothing. (Even skins require knapping of stones.)
No domestication of animals. No cheese, no yogurt, no milk (beyond clubbing a mother goat to death and eating the udders with your teeth).
No beer. No pizza. No wine. No chocolate. :run:
If we never had science, then humanity would be a small group of brutally short-lived simians, hunting and gathering only in warm regions where we wouldn't freeze to death in the winter.
If we took away all scientific know-how right now. Over 6.9 Billion people would be dead within the year. :sorry1: And the few "lucky" ones just might think every now and then, when not fighting for survival, that some divine grace was what let them be the survivors. :sarcastic
===============================================
A world without religion would be a world filled with atheists and agnostics, living with all the amenities of modern life (likely without nearly as many borders, sexism, homophobia, racism, or just run-of-the-mill intolerance). Good people doing their best to be nice to each other; because we're all in this together; and the only point of our existence is to make the world a better place for our great-great-great-grandchildren. :namaste