system
Given the following post, respond as if you're commenting on Reddit:
human
[Real Time Strategy] Why are rockets so ineffective against infantry?

I think in most CnC games an infantry unit can take quite a few rockets before they go down but much fewer bullets.
gpt
Because this are Armor Piercing Rockets.  
If you want kill person with a rocket you use anti personnel one. The one that creates lot of shrapnel. However such rocket are useless against flying and ground vehicles.  
So you put in to rocket engine, some kind of guiding system. And warhead that can damage something Like Mammoth Tank.  
Adding shrapnels will make rocket to big. So they specialize equipment.