I just happened to randomly click on the "deleted recent answers" link in my profile, and noticed that this answer had been deleted along with its question, How to calculate the probability of the outcome of a Vampire the Masqurade roll? (both links 10k+ only).
Since I don't have 10k rep on this site, I can't see when, why or by whom the question was deleted. Sure, it may not have been the greatest question ever, but it didn't seem that terrible to me. And my answer was at +5 score, so I'm pretty sure it couldn't have been deleted by the question author.
I'm not terribly concerned about losing the answer itself. Sure, I did spend some time on it, but in the end the content was just a trivial AnyDice script and some explanation of basic probability theory. It's not the greatest answer I've ever written, nor even the greatest answer that could've been written for that question. But the deletion of the question itself puzzled me enough that I figured it was worth asking about.
All that said, this is mainly just idle curiosity. If the answer turns out to be that "there were reasons, but they're kind of private and we'd rather not discuss them in public here" or anything like that, I'll be fine with that, too.