Ask HN: What's the longest you've worked on a side project, without finishing?

This guy's been working on his for 9 years. I doubt that's the longest though. What's your record? (Mine's 2 years and counting)

https://www.reddit.com/r/webdev/comments/3fftyw/why_side_projects_die_and_an_idea_to_finish_more/ctoc4bh