the politicians certainly like volunteers more. the big lesson our government learned from vietnam was that if people of all classes have to face the fact that their precious sons and daughters are being sent to die for some warmonger's private agenda there will be an uprising and the military adventures will be a bit harder to pull off. as long as the ones dying are from the lower economic classes (who volunteer in many cases more to get education and job training rather than fighting rich people's wars) it's a lot easier to keep the wool over everyone else's eyes.
if this particular fiasco continues as is, i think recruiting will be a little tougher. and if predictions of further actions against syria, iran, or whomever come true there will have to be a draft. i kind of hope they try it in the hope that it might help more people wake up to the way we've been mislead. you can sluff it off when nobody in your family's ass is on the line but your critical thinking gets a kickstart when it's your kid out there. bring it on.