Mitt Romney's strange taste

So... Mitt Romney's favorite book is Battlefield Earth.

[jaw drop]

The "my favorite book" question is an example of all that is silly during campaign season: there can never be an honest answer--someone who reads will have more than one favorite book, someone who doesn't read will have no favorite book. Nonetheless I find Romney's answer inexplicable.

Its as if someone asked him what his favorite flavor of ice cream was and he said 'peach-licorice'. Certainly there is nothing wrong with such a weird choice... but why wouldn't he have said chocolate or vanilla?