I apostatized when I was single. So I do not face the difficulties presented by lostindc with the Do I face the music? thread. For that, I feel fortunate.
For me, the greatest personal loss by apostatizing was rejecting the faith of my fathers. Implicit in doing so is that I think that they were duped, that they believed in something and ascribed to it in life-changing ways, when it is not 'true'. It is not what it portends to be. From that first ancestor that joined Mormonism in the 1830s, through generations to mine, there have been those that it appears obviously accepted Mormonism because it was the family religion and way of life, just as some stayed on the family farm their entire lives.
The last of my ancestry to have hewed extremely close to the Mormon line were educated no further than the 8th grade, including 3 of my 4 grandparents. One went on and graduated high school, and was the least religious of all four. My parents both graduated high school and my father a couple of bachelors degrees in engineering, both tried with all their might to continue to cling to the faith of their fathers, white knuckled and all. But after my apostasy, within 5 years each of them too had given in to the reality.
Learning available knowledge has displaced the need to cling to a mythology. As knowledge continues to expand at a fast pace, and access to knowledge has become a reality, the Mormon myths are becoming as quaint and querky as those of early Americana, such as Johnny Appleseed and Paul Bunyan.