I had an open source project (https://github.com/dheera/rosboard) that I burned out and didn't really do a good job continue maintaining.

* I was burned out from work politics at the same time, and had to prioritize fighting those work politics since that's what was paying me. By the end of each day at that company, I didn't feel like staring at a screen any more

* I would get a flurry of poorly-tested pull requests that would break it for some users

* I got lots of suggestions of <feature to implement> which weren't well thought out for how to generalize

* No actually good engineer stepped up to say "I want to help with this"

* There was a commercial alternative that had gotten funding and they were better at marketing