They are not old enough or grown up enough to make rational decisions. I can still remember being irrational at that age. It took me 3 more years to know which direction I wanted to go. All kids fresh out of high school should be required, just like many other countries, to serve 2 years in the military, to help give them direction. I joined the military out of high school and it still took a few more months to get a positive direction for my life.