I started my own instance and do currently not intend to open it for others (besides, maybe, close friends and family).
My intention are
- to learn more about the concepts
- evaluate how reliable the replication of comments and posts works
- maybe create my own pseudo-community just for myself, as kind of a simplified blog
Reading other posts in this sub, I saw it is still seen as offloading the main servers, as the replication of the data is a low load compared to serving the UI. Maybe one of these motivations apply to you, too? Or you find another one? At the end of the day, host your own instance if you want to :-)