system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why did humans develop complex emotions?

Edit: Some clarification. I'm asking why we evolved emotions beyond the base ones (happiness, sadness, fear, etc.) We now have anger, shame, pride, etc. And yes, plenty of animals demonstrate both simple and some complex, but not as much or as deep as humans.
gpt
No source but I've read somewhere that emotions were an evolutionary result of communication before languages were developed. Think about it, the voice in your head speaks to you in your language (English for me) but before that, your mind used emotions such as fear, anxiety etc to communicate with you.