Also, this is the most extensive list of others' wikis/knowledge bases I'm aware of: [2] Nikita's wiki is very cool and greatly inspired me.
I made mine public mainly because: I spent time curating and organizing this knowledge, and if other people can benefit from my curation for their project/learning/etc, this will ultimately benefit all of us, including myself. So in some sense it scales my efforts.
I feel like I've accumulated vast amounts of information, and some of it I'll never have time to properly process. However, I've already spent time curating it, so perhaps someone else can browse through my links and spend less time sourcing the information.
Another motivation is that I want to live in a world where I can tap into anyone's "public knowledge" and browser through it, without having to physically interact with them. Not that I don't like physical interaction, but it just doesn't scale as much, so we'll need something better in the future anyway. Public wikis are the closest we have to that future, perhaps.
[0] https://beepb00p.xyz/tags.html
[1] https://beepb00p.xyz/exobrain
[2] https://wiki.nikitavoloboev.xyz/other/wiki-workflow#similar-...