I just also want to express that I won't be thrilled about someone forking the project and trying to go their own direction with it or something. It'd be demotivating if someone thinks they can do your project better than you can, right?
If it is a labour of love, then maybe.
If you had plans to monetise then I expect it would be rather annoying too.
But if the project is at least partly "scratching an itch", to make something you want because it doesn't already exist in quite the form you want/need, then someone coming along and doing it better is great. Your itch is scratched and someone else is dealing with maintenance, so you can get on with your next plaything! And if you are counting life karma points, you can claim at least a few for having inspired the other person's/group's work.
This would be valid thinking though should the project go inactive.