Think about that, you are making a system. you need to create a same element in around 10 times. At that time, you are considering to create a prefab
However, you already have a ton of folder on your project. You don't want to create more folder just for this tiny thing.
"What should I do? Where should I put this prefab?"
You don't want to put this tiny thing to your major prefab Folder.
You're feeling hard for this tiny stuff...
This is the tool for you!! Just right click and prefab everything to the same folder!!