Do you suppose men are more war-like and violent because they don't get to see enough blood on a regular basis?

"The Four Feathers (2002) Official Trailer #1" - Heath Ledger

https://youtube.com/watch?v=JjB6a_Op1bM&si=oVF_3FliNWECWNBK

But if they did see more blood on a regular basis, maybe it would fix something in their brains, at least for some of them?