I think that kids like to think that they are mature. How many times have you heard "I am mature for my age"? Doing adult things at a young age does not make a kid mature, it puts them in situations that they cannot cope with.

Some kids are more mature than others, but most are not. To me it seems that kids are even more ignorant and immature. If they were so mature, they would not do all the stupid crap that they do.