Personally, I like to answer the questions that everyone wants to know, but no one wants to put the effort to answer them.
You'll notice most of my activity in the wiki edits area trying to improve existing knowledge or running statistics on other things. One of the new questions I'm planning on tackling is this and the entire heating system mechanic.
I also like playing around with friends using "themed" depths (such as stun-only weapons and armor - If you don't have a piece to fit that spot, you dont get to use it). Depths have themes against us, we use themes against depth. Take that!
I enjoy all of that and that makes the game fun for me.
What makes the game fun for you?
It used to be the community, all though not so much anymore. I would say what makes this game fun is finding a party and mature people- one two or three, it doesn't matter, and having a fun time with them. Having intellectual conversations all the while demolishing the depth. That is what I think is fun