This article covers it clearly and completely.  The military and government doesn't want the draft because the anti war movement could easily mobilize when everybody's some has the potential to come home in a box.

The Pentagon learned important lessons in Vietnam.

• Curtail the press and media by 'embedding', this gives you control of the story. It also helps to cover up war crimes and corruption. 
• Do away with the draft, then use the dollar to eliminate the shortfall. This has made wars much more expensive, but has transformed the war machine into big business.
• You can contract for anything.

The new war machine is a poor peoples war, they are the ones dying and returning home missing parts of their bodies or suffering brain damage. The result is a whole generation has become killing machines, brainwashed and.wasted.

Posted on Dreamwidth