Because educating them in worthless fields is definitely going to help us in international competition...... derp....
Maybe you should have gone to school for debate. Then at least you'd understand the arguments need to support your conclusion.
Funny thing you mention that, I was on the debate team in high school, haha.
You should take your own advice, btw, as your conclusion is not supported by your arguments: your idea was to eliminate all student loans, not only those in 'worthless fields'. The elimination of student loans would decrease the supply of labor across all fields, not just those 'worthless' ones. As previously mentioned, banks do not give high value unsecured loans to 18 year olds very often, no matter what they might be going to school for.