I had written an answer pertaining to a question about a reader having read Richard Dawkin's book, The God Delusion. I find now that it has been quietly deleted. Why? Shouldn't the questions and their answers be retained for historical reasons?
I doubt the process was silent. If the question was previously closed, that was the feedback process. It sounds from your post like this was an old closed question. The close reason and any comments that went along with it are the feedback process. Old close questons are not nececarrily kept around. If they are not fixed to be in line with site guidelines and openable they are eventually removed. Downvotes ones can be automatically removed by te garbage collection routines. Upvoted ones can be removed by a moderator ifit is apparent that they are not being fixed.
The only exception is duplicates. These are generally kept around as they serve as pointers to open questions. All other closures should be considered tracked for eventual deletion. The feedback process has already happened, no additional feedback should be expected.
I would answer this as well as I find it can be very frustrating when someone puts effort in question/answers and then they get deleted and no one answers why. Here is the original question.
It had one up vote(net), one close vote and was closed by moderator for the following reasons
Perhaps it could have stayed or may be better deleted. Taking help from @Caleb answer as he states, if answer has no room of improvement or any chance of being reopened, they are deleted. This question perhaps had some chance of improving/re-opening but then no effort was made to clarify what the book actually said.
Perhaps it could have stayed closed (and not deleted) for historic reasons. It is an interesting question anyways.