In a quite natural and steady way, all my relatives (wife, kids, mother, aunt...) have adopted openSUSE in their computers. There is only one resistance spot. My father's computer (HP+Windows8) implements all kind of mechanisms to avoid dual boot.
I plan to use the spare cycles of my Hack Week to get a dual Windows/openSUSE system on that haunted computer. Killing Windows would be a feasible last resort.
This project is one of its kind!