The idea that a military should represent all socio-political groups is a canard. The idea that the military MUST be a balance is pure BS.
The military MUST have the people that want to be their AND can do the job. Nothing else. If that means snotty little rich kids like Paris Hilton don't join, then so much the better. Now if Paris gets her act together and truly wants to serve and accept the life that entails, then she will become just another soldier (no paparazzi on the base) anfd that would be fine too.
Now, if your going to enter into something on the scale of WW2, then you need a draft just because you will need the sheer numbers. However the days of 50,000 men storming a beach under machine gun fire is long past.
Todays military is a very technical endeavour. While all Officers have a 4 year degree, it is by benefit of having gone through an Academy or ROTC type structure. An anachronistic holdover from a bygone era where an education assumed the person actually knew what they were doing (and the Officer Corp was where your rich kids with connections went anyways).
However, when you start looking at the modern military you start seeing more enlisted people with 4 year degrees than Officers, and quite a few with Masters and beyond (it has gotten to the point in the Navy that you can NOT make CPO (E7) without at least a 2 year degree.
Todays military are volunteers. They are in because they want to be in (particulary 2nd and 3rd termers). The 1st term guys who don't like it or can't handle it, or whatever get out at the end of their enlistment. The ones who remain are motivated and very educated. A draft would not work in this environment. The draftees would be more trouble than they are worth and the senior people would end up spending more time on problem-children than on training the real gems that add value. Even the infantryman today is equiped with battlefield computers, mini-remote vehicles, GPS, night-vision, etc. While the inantryman of 40 years ago need only know how to shoot strait and pull the pin on a grenade BEFORE tossing it, todays soldiers are far more technically driven than even the Officers of 40 years ago.
