system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Why wasn't Star-Lord excited when meeting other humans?

When Peter Quill confronted Iron Man, Dr. Strange and Spider-Man, that was possibly the first time since he left Earth at 10 where he actually encountered fellow human beings. Yet, he doesn't act elated or excited about this, despite having missed two whole decades of human history and progress and having spent most of his life with brutish non-human species. I know, he was fixated on Gamora's abduction, but this guy is no stranger to cracking jokes left and right in the heat of danger and typically has a VERY strong nostalgia for the world he left behind. So what was his deal?
gpt
He owns a spaceship.  He's not exiled from Earth, he could have gone back any time he wanted to.  He doesn't want to go back because that's the planet where his mom died.  He doesn't care about the last 20 years of human history because it's history of the planet that couldn't save her.

He only cares about the music because it's the focal point of his most positive interactions with her and it keeps her alive.