Why fruitcake?

Once again, not being entirely sure what is going on with the Brits, Americans - and the rest of the world, for that matter, are asking the "fruitcake" question.

No one likes fruitcake! We use it for door stops, we re-gift it, don't allow it in l-a-n-d-fills for god sake. So why fruitcake at Charles' and Camilla's nuptials

Even Martha wouldn't recommend fruitcake for the wedding so... We remain tuned in for the rest of the story. Just please don't re-gift it to us.