Whether or not you agree with the high goals of the (US?) military; for a great many people it is a solid career, a role model they never had, and possibly a stepping stone out of an awful life. Also a very small percentage of these are actually fighting in infantry risking their lives.
This is much different than saying "Ooh youre 18 now, look how much money these 3 people make selling their naked videos! And there is absolutely no consequence at all to this, for you or your society!"