Okay. Why do you think the U.S. military is hurting for intelligent personnel? Many want a draft just to get a better cross section of society in hopes of pulling in some people that qualify as more than grunts. They need more men period, but there is a serious brain drain that's just as much a concern.
I don't notice this very much to be honest, being a grunt myself. Grunts very very rarely are not voluntarily in their position. The cross section of the Infantry is extremely diverse, I don't know anyone at all that was 'put in' the infantry, most infantryman went to their recruiter and told them 'If you do not get me into the infantry, I will not join' or something similar. It is a HUGE misconception that the infantry is just where people 'end up' that are to stupid to do any other job. Being in the infantry is a huge point of pride for a Marine.
Even our running cadences are based around that fact:
'Cocksucking motherfucker eat a bag of dick, if you aint infantry you aint shit.'
When running by POG's during PT:
'Look to my right and what do I see? Weak ass POGs trying to be like me. POGy POGy can't you see, no amount of PT makes you INFANTRY.'
'Hey Hey Army, what are you doing? Get off your tanks and follow me, I am Marine Corps Infantry.
Hey Hey Navy, what are you doing? Get off your ships and follow me, I am Marine Corps Infantry.
Hey Hey Air Force, what are you doing? Get off your chairs and follow me, I am Marine Corps Infantry.'
...and on and on, many more.
Honestly, the reason I see the hurt is because most intelligent people will get out after one or two enlistments, the ones that stay in are the fucking idiots, as far as I can tell by my higher-ups.
I know this isn't a very good response, but the Infantry is what I know.