Great, then become a youth pastor. The fact that we've got some ingrates around isn't a reason to do something that damaged readiness and harmed domestic tranquility when we did it before. The volunteer military performs fantastically, and using it to solve a societal attitude problem isn't any better an idea than any other for of social engineering.
The voluntary military is stretched to the breaking point, and requiring someone to serve their country isn’t ‘social engineering’.
If you’re so enamored of all volunteer forces, move to the Vatican. They hire their’s in Switzerland.