I love brainstorming new scenarios, sourcebooks or backstories. Starting with a blank page, setting some constraints, adding random pieces, finding connections, and pulling the thread until something cool emerges. This process is one of my favorite parts of practicing RPGs. It can almost be a game in itself. After all, solo roleplaying is built upon this brainstorming and writing feedback loop.
I started RPGs in 1989 and played for an uninterrupted period of 12 years, with 2 to 4 game sessions per week. Then life and priorities changed, and I completely stopped for twenty years. I only started looking into RPGs again during the pandemic, which I think has been a pretty common pattern. I discovered a whole new world of games, creators, software, and habits. It was amazing, and quite overwhelming.