Honestly theoretical, people can be emotionally selfish too. Often people decide that if you don't fit into THEIR box you don't have any value. They genuinely cannot see how another person values what they happen to value and tend to decide that if it's of no value to them, doesn't have any importance to them then it's not important or valueable.

A person can be standing next to a stranger and decide that person isn't very good looking, might not have the kind of clothes on that they feel is a must, may not drive THE best car or be all that social and friendly. So, they can decide that person isn't all that valueable YET little do they know they may very well be standing next to the very person that may someday save their life because they happen to be a heart surgeon and may even be the heart surgeon they end up laying in front of that can repair their failing heart.

Just because a person can experience emotions, doesn't mean they understand emotions or can even know they tend to be emotionally selfish.