No one is being kept in the LDS faith at the point of a gun, and lots of religious groups shun members who stray. It's up to the INDIVIDUAL whether they choose to let shunning affect their FREE CHOICE in this country to change their religion.
Folks in Muslim countries don't have that kind of freedom from fear of persecution or death.
I like to thank you for this post, it is now apparent that you have know idea what mormonism shunning is and how it can destroy a person, their families and their life.
At least now I can surmise where you are coming from with regards to mormonism.