Following up on High School Students

Maybe this moves me from the left wing camp, but I am sorry if I am not concerned about high school kids rights. More specifically, they are KIDS. There is an all too disturbing cultural idea best incapsulated as "out of the mouths of babes". And we aren't talking about attractive women. Just because children, even high school age CHILDREN, say or do something doesn't make it worthwhile. As satire of the Bush administration goes, making Bush look like Groucho Marx isn't very good. In fact, one might go so far as to say it is juvenile. I kill myself, of course it is juvenile, they are high school kids.
Recently, in a great decision on a case out of Missouri the Supreme Court outlawed the death penalty for minors. Crucial to this decision was the determination by the Court that children, even those in high school, cannot make fully reasoned decisions. This determination by the Court was backed up by a number of scientific studies. Which brings me to my point: WHY should ANYTHING regurgitated out of the mouth of someone who cannot make a fully reasoned decision be given any creedence as some how more revealing of the "truth" or worthwhile as political discourse? I am going to make a judgment call here and come down against the "rights", inasmuch as they are political "rights", of high school kids.