If 16 year olds were able to vote, they could be encouraged to register in schools and become habitual voters which will encourage political awareness and an interest in civics.
In Austria the legal voting age is 16. Results of a study in Austria showed that 16 and 17 year olds are more likely to vote than 18-21 year olds. If younger people were more likely to be politically active shouldn't everyone be encouraging that ?
In the eyes of the law, people under 18 are seen as young offenders and judges are more lenient as a result of what they see as lacking psychological responsibility. If the voting age is lowered to 16, would this change ?