When I ask you to do something, I really do not care if you "want" to do it or not. Sure, it would be great if you "want" to do what I ask, even better if you "like" to do what I ask, but believe me, "wanting" to do something is actually not necessary to being able to complete a task.
Seriously, as long as you do what I ask, I don't care whether or not you "wanted" to do it.
p.s. Mashed potatoes are not finger food. We have forks, please use them.