They fear having to make that choice between us and the organization, and they would rather us pretend for their sakes.
I stopped going to meetings 9 1/2 years ago. I was certain things would come to a head, that I'd end up disfellowshipped and lose my family (I was and still am single).
To my surprise nobody confronted me about it. My parents were over at my house this past weekend and I'm going on vacation with my brother and his family this summer. My relationship with another sibling has been damaged, but I suspect that's mostly due to unrelated reasons. Outside of inviting me to see my 11 year old nephew get baptized (I'm still pissed about that, but I held my tongue), they don't hassle me about meetings. They don't even pressure me to go to the memorial anymore.
The presiding overseer made one phone call to me after I moved away and stopped going to meetings, but it was clear from the tone of his voice and from what he said that he was calling to check the box and had no desire to hear a confession or inquire about my personal life. The inquisition I feared never materialized.
That being said, I'm a pretty well-adjusted guy who left because it became apparent that what they were peddling wasn't truth. Things might have turned out differently had I adopted a sex, drugs and rock and roll lifestyle, but I'm still the same guy I've always been. They don't know what to do with me, so they just don't pry. And I don't have any desire to confirm the obvious either.