Is it alright to work with biography writers on your memoir, or should it be all your own work?

It’s a sad fact that too many stories are never told because too many would-be writers never get around to telling them. And they don't get any help because they’re worried that they can’t – or shouldn’t – let someone else tell their story. Giving your memoir to a biography writer may feel like a compromise. But if it helps turn the fantasy of wanting to write your story into a physical, giftable, saleable reality, is it a compromise worth making?