I’m younger, but this basically sums up my experience. I still try and make sure to do some (TTRPG) writing every so often just to keep myself sharp.
I used to go through a saga in a couple days. I once reread all of Harry Potter in 6 days. I struggle to finish audio books that I love nowadays
Obsidian is just sooooo good. I hate that you (technically 😉) have to pay for multi device sync, but the UI and UX are excellent, especially if you’re already proficient in markdown
Haven’t tried logseq before, so I can’t compare