system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it that I can buy a perfectly edible block of cheese that has "aged for 3 years," but then cheese in my fridge goes moldy in a month?

I'm fucking sick of this shit. 

AND I WANT SOME FUCKING ANSWERS!!!
gpt
Usually, it has been aged in a highly controlled environment, with precise temperature, humidity, and direct inoculation of a specific strain of tasty cheese-making micro-organism(s).  Your fridge has varying humidity, temperature, and is full of thousands(++) of different micro-organisms all trying to get a taste of something to keep them going.