I was surprised at some of the drinking ages listed...
chart of drinking age/age to purchase
Drinking by minors under adult supervision is permitted in licensed premises in provinces of Manitoba and New Brunswick and at home in Prince Edward Island, Alberta, British Columbia, Ontario and Saskatchewan.
Denmark - Alcohol may be purchased at age 15 for off-premises consumption, but not until age 18 at on-premises establishments.
Germany - Beer and wine may be served to people under 16 only if they are accompanied by parents.
14 year old - "Hey mom, could we go to a bar and have a beer?"
Edited to add...it seems more dangerous to let a 15 yo buy alcohol for "offsite" consumption - at least it would have been for me and my friends.