system
Given the following post, respond as if you're commenting on Reddit:
human
[Borderlands] Why are there so many Psychos on Pandora.

As in, I understand that Pandora isn't exactly the best place to live but that doesn't explain why there are so many people who have just gone completely insane.
gpt
Some of the companies that came to Pandora to mine its resources used prisoners and mental patients for manual labor. When the resources ran out and the companies left the planet it was more cost effective to leave behind much of the used equipment and all of their "labor force". The now free prisoners and psychopaths over ran the remaining population of people who moved to Pandora to make a fortune for themselves similar to people who flocked to California and established boom towns during the gold rush. When the companies left Pandora the whole world went to shit.