It's amusing to me that you seem to be struggling to vocalize why anyone would want a website like yours - as if a 'resume' or a 'journal' were the only reasons to keep one.
But, as a reader, I think a website like yours is like having a chance to explore that person's personality in a freeform way. The design reflects their aesthetic (similar to how fashion does for the physical form), the organization reflects their favored mental models perhaps, and the myriad of topics and links makes it a graph-like structure for a book/journal/life. It's strange to me that people question a personal website's purpose - but accept that of a coloring or sticker book. To me, that only says that our brains haven't quite caught up with how to use the medium. (Although, if you have read sites like philosopher.life, then I think you have a glimpse of what's possible.)
But, as a reader, I think a website like yours is like having a chance to explore that person's personality in a freeform way. The design reflects their aesthetic (similar to how fashion does for the physical form), the organization reflects their favored mental models perhaps, and the myriad of topics and links makes it a graph-like structure for a book/journal/life. It's strange to me that people question a personal website's purpose - but accept that of a coloring or sticker book. To me, that only says that our brains haven't quite caught up with how to use the medium. (Although, if you have read sites like philosopher.life, then I think you have a glimpse of what's possible.)