The voting age

The voting age in Denmark is 18. It is therefore refreshing that for the coming Communal elections in Køge (south of Copenhagen) the minimum age will be reduced to 16 as a test case, and perhaps, for a wider change in Denmark where 16 years will be the voting age.
I have always though 18 was too arbitrary: when I was 16 myself I am sure I knew much more about politics and society than most elders, and I am quite certain that the following generations are even better educated and reflect more about the issues around them. It is thus a welcome time for reducing the voting age.

Perhaps we should eventually consider taking the whole thing a step further: what about setting an age limit for when people shall not be allowed to vote any longer?
Politics is about looking forward and thinking about the future; there is a time when old people simply don't do that, and tend to be too cynical, conservative and self-centered.
So since the future belongs to the young, the voting age should be set down, and an upper-age-limit should be set.

Oh well, it will probably not happen, but I certainly like the idea.