system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 What’s the purpose of inverted controls in video games?
gpt
A lot of us older dudes started playing flight simulator games back in the day. At that time you could move up and down (y axis) and left and right (x axis)  through the air. 

To simulate an aircraft’s flight mechanics, pulling down on the joystick caused your plane to point upwards and go higher or gain altitude.

When FPS games came along, you again had access to left and right, and up and down movement. The camera functioned in much the same way the “plane” did. Therefore, all of us that learned “down is up” on flight sims brought that same muscle memory to FPS’s, and the inverted y-axis option was born.