See also:

https://news.ycombinator.com/item?id=32137336 - Ask HN: Is having a personal blog/brand worth it for you? (2022-07-18, 309 comments)

https://news.ycombinator.com/item?id=35164819 - Ask HN: What has your personal website/blog done for you? (2023-03-17, 451 comments)

HN really like these personal blog threads because a lot of us have blogs, and we all appreciate people showing interest in our blogs.

I have a blog because a bit of reflection lets me get more out of whatever experience I just had, and I get a sense of joy if some other human shared my experience through those writings.