My main concern is that in recent times enfranchised young people have tended to show a considerable reluctance to exercise their vote.
My assumption is that they perceive the practice of politics ignores their particular interests and see no point in taking part in any "democratic" process. Jeremy Corbyn's successful seizure of the leadership of the Labour Party appears to be partially the result in tapping into this perception.
I think that Floo's categorisation of 16 and 17 year-olds as being distracted by "raging hormones" is not really accurate. The worst excesses of puberty are over by this age, and most are engaged in deciding what kind of adult life they want - even if it only at the level of what form tertiary education should take. And the consequence of large scale debt arising from simply continuing their education was a decision they had had no say in.