Clones start out life as babies . Armies are far easier to raise the old fashioned way--by recruiting or drafting naive young adults.
It is easier to clone a new army than draft a new one.  
mnli hypothesis: It is easier to clone a new army than draft a new one.   premise: Clones start out life as babies . Armies are far easier to raise the old fashioned way--by recruiting or drafting naive young adults.