One actor from Lord of The Rings said it in an interview

i have personal experience, my brother never screamed, just made a weird sad noise

Really?

LOOK HE KEPT ASKING FOR THE CONTROLLER AND I COULDNT PAUSE IT JUST HEAR ME OUT

Wtf???

I never understand people who scream in fear
I just freak tf out
In pain ig makes sense if it's bad enough but why would you scream?

I scream when sad

I scream when I'm bored

Fair

when I'm sad I go into my lil corner and become ball

I scream when I fall off the map in tf2

gng, screaming is an evolved feature. It is meant to alert others around you so that they can both come and help you and also escape the danger themselves. Its just instinct built to help the group survive

I live by the philosophy of "Be faster than the friend next to you"

I mean, he was a soldier