Same here, but I don't even care if the person is interested maintaining it. I have observed twice now that the interest of somebody submitting an almost trivial patch flamed up after I granted push access. The project suddenly got a burst of life again, and commits started to become more and more ambitious.
I am going to try that from now on. Giving people access to repos and then letting them pass on the baton when they are done. That is a very novel idea.
P.S: Yes I upvoted you and I wish I could do it once more :)