Context: I received an email yesterday from a friend who , as a quick side note , thanked me for doing my " military duty . " The truth is , I never did my " military duty . " My military duty was to defend my country . Instead , I spent five and a half years defending my government 's lunacy during the Viet Nam era .

Question: Why does the writer feel he did n't do his military duty ?
Options:
0. Because he was thanked through an email .
1. None of the above choices .
2. Because he does n't agree with the mission he was assigned to .
3. Because he was in Vietnam .
Answer: 2