I'm going to give a very candid answer.
I oppose compulsory military service because I'm a little bitch.
Honestly though, we need our soldiers to be people committed to the fight, not terrified civilians who have been thrust into a combat situation. I play Call of Duty, I don't fight wars. But I have great admiration and respect for those who do. They are far braver than I. In a war, you need soldiers with the wherewithal to remain calm and in control in a combat situation. That is not me. And that is probably not a majority of citizens of this nation. Not everyone is a soldier. And that's okay.
I also don't happen to be fond of the implications of compulsory military service on freedom.
Pfft, don't doubt yourself. You may turn out to be a big bitch.