It has everything to do with good order and discipline, and nothing at all to do with morale. It is about the image that the service, the Corps in this case, wishes to project. The rationale when I was on active duty was that cammies are a field uniform, not a uniform to project the Marine Corps image out in public. Is this rational? Does it matter if it is rational or not? Does the fact that there are men and women in harms way in Iraq and Afghanistan (and who knows where else) mean that the services should turn a blind eye to the good order and discipline of the service men and women who are not so deployed? How does not allowing Marines Stateside to wear cammies in public effect those Marines involved in combat operations? The Commandant of the Marine Corps is Commandant to all Marines, not only the ones in combat (although I am sure that they are first in his thoughts).

Just my two cents.

Stonefly

Add/Edit: Perhaps you can enlighten me as to what the intent of Hacker's post was.