Maybe that is what makes us human. Narcissism. Thinking so highly of ourselves as a species. Above all other living things.
Even when we do what can be considered selfless things, we do so because some couldn't live within themselves if they didn't.
Maybe it's because we are so self-contained. Can never truly share precisely what we think or feel, only use words and actions in a feeble attempt to do so.
Like you can never be me, never perceive/feel/see/hear/taste etc. things exactly the way I do, just as I can never be you. No matter how hard we try to communicate and relate, we are still alone. Trapped inside ourselves. Forever.