[brabel]

What do you mean by "didn't work out"?

Like, it didn't manage to implement the features the author set out to?

Or more like "no one is using it", or even "it's not making any money"?

I feel like, for a passion project, only the first one applies. I have many projects that as far as I know, I am the only user of, and I am happy about that! As far as I am concerned, my project is very successful because it solved a problem I had and that no existing project addressed.

[bawolff]

I mean more - if you are not getting value out of maintaining it anymore and there wasn't enough interest to make the project self-sustaining without you.

But also sometimes things change, what was a good solution once might not be a good solution now.

There is no one answer, all im saying is that there is nothing wrong with moving on if the project no longer interests you.