Recently a user deleted his/her own question regarding the applications of continued fractions (link for 10k+ users), possibly in response to comments (including several of mine) which noted that continued fractions are very useful, but not for the purposes the user seemed interested in. There was nothing intrinsically wrong with the question, and I think it has the potential to generate some very interesting answers. Accordingly, I have voted to undelete the question. But this makes me wonder: what is the community's position on users deleting their own questions? In particular, should this behavior be discouraged, and should such questions be undeleted? A related question was asked here a while ago, but received little attention and does not address the issues here specifically.
Users of course have the right to delete their questions. This is generally frowned upon if there are already substantial and/or upvoted answers to the question, since then you are taking reputation away from people who have put time and effort into helping you, but if that isn't the case then I don't see any reason to undelete.
If you think the question has merit, you can always re-ask it yourself.