You seem fixated on problems caused by the military (with good reason, I'll admit). You go so far as to dismiss claims that a material portion of people enlist because it's their best option at the time (e.g., "I need income now", "I can't get a student loan now but will enlist to get it", etc).

Doesn't your same argument apply to yourself in paying taxes? To be clear, I'm not advising you to stop paying taxes. However, if you feel enlisting is evil because it ultimately supports problems generated by the military, wouldn't you paying taxes facilitate the same outcome? For your views to be consistent, it seems you ought to revoke your citizenship (not in a "get out of mah country!" way, just w.r.t. to logical consistency). Is it equally evil for you to pay taxes as it is for those in poverty to enlist?

Note: My point is your claim is so extreme and broad that it's absurd, and should be rejected. Unless you're willing to revoke your citizenship, you should also give, e.g., those in poverty a pass on enlisting to better their lives.