system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is system32, and why is it so easy to delete if it's so important?
gpt
It's a part of the operating system for a computer.  

In particular, it's used by Windows OS.

These days, you can't delete system32 unless you're using a secondary OS, from a boot disk or a flash drive, since you can't delete it while Windows is in operation.