BUT: What really made a personal blog worth it for me was writing my own blog engine as a learning project. I hadn't done much in the Node.js stack, so I wrote my own blog engine to run in Heroku. Maybe if I have some downtime between jobs I'll do it again, too.
My blog engine isn't anything special; but it achieved my goals: To get a feel for Node.js and the general state of web development in April-May 2020: https://github.com/GWBasic/z3