Because no one is forced to go on a Mission. I hate this kind of abdication of personal responsibility for people's choices. There may have been people urging him to go. Unless he was abducted he chose to go. At 19 virtually everyone is capable of defying their parents. They've probably been doing it for years.
It is much more complicated than this.
This topic reminds me of a young woman with whom I worked who was "forced" into an arranged marriage. Did anyone hold a gun to her head? Nope. Did anything threaten to kill her? Nope?
But, if she didn't go along with the marriage she would be shunned for life, never again see her parents or siblings, be cast out of her community, and her family would be shamed forever. The consequence for not marrying were too severe for her to even comtemplate.
Similarly, some young men feel such pressure to go on a mission, and feel such horror at the consequences for NOT going, that the only option they can see is to go. It is not about disobeying their parents, it is about displeasing God, trying to have trust in leaders, trying to have faith that their testimonies will indeed grow. It is about doing what they have been taught all their life is their duty and obligation. It is about holding hope that the blessings they are promised will indeed materialize. It is about not disappointing families, friends, leaders, and community. It is about holding onto hope that God is really there.
It is shameful to suggest that these boys who give two years of their lives, as they try to manage their situation the best they can, hoping somehow life will turn out well after the struggle, who put their faith in those who claim to speak to God, are somehow chicken, or stupid, or weak, or unable to stand up to their parents.
I'm not about blame or guilt or holding onto the past, but to suggest the church/doctrine/teachings/culture did not play a huge part in these young men going on missions is to be either naïve or disengenuous.
~dancer~