Again, I'm not sure what point you're trying to make. We survive because we're alive.

I think you're conflating sexual needs to reproduce with day to day survival needs.

Again, I don't need a llama to build a house, get me food, or protect me as I can do those things for myself.

Many species live sex segregated lives, only coming together to mate, even within the same ecological niche.

Dominance hierarchy pushes sex segregstion. That was the reason to disenfranchise women and for marriage. That's why we're seeing a push for forced marriages again. Get them married off young before they can fully mature and then trap them with babies and infantalizing them so they can never grow up. That's how it works, right? In most dominance hierarchies females are relentlessly pecked and bullied.

Except for wolves. Witness the irony there.