system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the Windows .NET framework, and why is it useful?
gpt
Cooking, eating, washing dishes, and getting rid of trash all took a lot longer and was less effective before we standardized dish sizes, cooking instruments, had a stove and a dishwasher, and were able put all the trash on the curb where it magically disappears later.  Frameworks represent standards, appliances, garbage collection, and easy means of getting things to and from your code/house to remote locations/landfills that you haven't the slightest idea about how they work.  Additionally,  If you write your code to the framework, you can be sure it will work on anything that the framework says it can run on.  In the case of Windows .NET, that means 'any' version of Windows.  In the case of DotNetCore, that's starting to mean 'any' modern device.  There's a few asterisks in there, but that wouldn't be ELI5.