I was reading an article on very old pyramids they found in Peru a few days ago. There is a pit at the top, they think for burnt offerings. Why was everyone do

I was reading an article on very old pyramids they found in Peru a few days ago. There is a pit at the top, they think for burnt offerings. Why was everyone doing burnt offerings? The Old Testament mentions them and ancient peoples in many geographically isolated parts of the world were doing them. It's really weird, there must be something in the human psyche that resonates with the idea of burnt offerings. Or maybe burning offerings produced effects from the gods, but I'm guessing it didn't do anything but be a ceremony or totem. It's still weird and has me puzzled but I'm pretty sure objectively it wasn't all that great of an idea and certainly don't think we should take up doing burnt offerings now even though it was pretty common practice in ancient times.