Actually, It arguably makes sense if you support a cigarette age band at 18. That is... if you think the 18 year old band and 21 year old ban were right a decade ago.
Generally, Psychology, Sociology etc have observed and codified a "Lengthening" of childhood into a new "Youth" stage that incorporates 20-25. People just aren't as maturing as fast as they used to and not thinking about the future right away.
In a lot of ways... 21 is the new 18 and 25 is the new 21.
Of course this would ALSO suggest that plenty of other things, like registering for the draft and voting should be pushed back as well if so inclined.
(Though I would argue that ~16 is really good enough for most of this stuff.)








