OK so imagine you are broke, no opportunities because of the place you live or your economic situation we won’t choose a specific reason or situation, but you have 3 choices. The game is not a real thing and you can only answer with one of the choices and give your reason why, otherwise it is no fun.
You have a cousin who is a career criminal, makes in a month what you do in a year working your ass off at your minimum wage job. He offers you a chance to work with him, you know you have the smarts and balls to kill your cousin, take his spot and make a small business for yourself.
You are against the war and military yet you use realist morality to justify it to alleviate your financial woes. Joining goes against your nature and you do not much like the thought of killing people in what you consider an illegal war. Yet you don’t like being broke so you join and once you leave get money to go on to further education.
You stay broke and keep within the law and don’t forget your morals and do not join up. You live out the rest of your life on the bread line and never have any eventful moments of purpiose or clarity.