increasing the legal age is a better idea than an outright ban.

banning things doesn't work; i'd rather ban marijuana than tobacco, as it's far worse.

young people are less mature than they used to be. 21 is reasonable; 23 is even justifiable. 25 is pushing it.

https://www.theglobeandmail.com/politics/article-canada-urged-to-consider-lifetime-ban-on-cigarette-sales-to-anyone/