It’s true that emotions did likely evolve for that purpose. However, if you view them that way, they’re really just simple rules of thumb. They’re what animals had before they developed “proper” intelligence, and they just stuck around after. In our case, we’re talking about something which has “jumped ahead” to already having intelligent responses to stimuli. Adding in emotions on top of that is pointless.
It’s true that emotions did likely evolve for that purpose. However, if you view them that way, they’re really just simple rules of thumb. They’re what animals had before they developed “proper” intelligence, and they just stuck around after. In our case, we’re talking about something which has “jumped ahead” to already having intelligent responses to stimuli. Adding in emotions on top of that is pointless.