I write about my learnings at https://erikmartinjordan.com. Financially it's not worth it. However, as a non-native English speaker, it's a great exercise to practice a second language. Plus, those days when I get positive feedback feel better than any regular day at my job.

Most writers are huge introverts. Blogs are great to know people that you probably would never meet in real life. It feels like magic that you can connect with someone from a different culture, that is interested in the same things that you do, and with whom you share a similar sense of humour.