moral dilemmas

Say, hypothetically, there was a very needy fandom on the Yuletide signups, with several requests and no one offering to write it. You have a hammer could write this fandom; in fact, you're written it before in a non-Yuletide context. But you don't really want to write it this Yuletide; then again, you feel guilty about those people who'd like a fic in this fandom, especially since a couple of your own fandoms are needy and you know how frustrating it is.

What would you do?