Obsidian is where I store my knowledge. I use it as a tool for writing, for storing information and knowledge, and for remembering. The main point of using obsidian is that it is living on your personal computer, can be treated as a good tool for writing quickly and also can be integrated with a lot of different tools, which probably is a huge advantage.
My Knowledge Wiki contains most of my knowledge (From 2023 onwards mainly). I gather all information I find interesting and my learnings in this wiki. The goal is to create a digital garden for my thoughts and share as many of the things I find interesting as possible. The goal is to have a comprehensive library for my thoughts and experiences to share with the world and look back on.