The problem is, although it seems that the question didn't attract much interest, it took me some documentation and effort to write it. I have been referring back to my own question regularly since then, and I may do so in the future. I have also pointed colleagues to that question (they have no account on the site, so they cannot upvote). It would annoy me greatly if I couldn't find the question next time I need to refer to it. (Of course it's not just that question -- I have other questions in a similar situation, e.g., on TCS.SE.)
Now, of course I understand SE has no duty towards me to host material which appears to be useful only to me :) but it would be quite tedious for me to have to check periodically which questions may be silently deleted by the roomba, so that I can make my own backup copy. Of course, I suppose I could always dig up these questions from the dumps, but that's quite a lot of effort.
Ideally, I'd like to be able to see my own questions that were deleted as abandoned questions. Alternatively, I'd like to be notified in advance about questions that will be deleted soon, get a copy of them emailed to me when deletion happens, or indicate that I'm still an active user and still care about a question... Is there anything like this that I could do?