Age Limit on smoking Legal substances?

I like how everyone saying it should be stricter is probably unaware that drunk driving accidents are pretty low in europe where there is no drinking age.

I laughed. Have you ever been to Europe? In Sweden, you're not allowed to drink before you're 20. In Norway, 18. And so forth.

A series of questions around the limits of cigarettes:
-Do you believe there should be a set age limit on smoking legal substances?
-A ban on tobacco products?
-A ban on youth advertising on cigarettes?

- There are in Norway already. (Besides, there is a set limit everywhere, right?)
- There are (to some extent) in Norway already.
- There's not even allowed to advertise smoke/alcohol in Norway!

I'd be more interested in seeing:
Marijuana legalized
or
Alcohol made illegal

Reasoning -
Marijuana, while having judgement impairing and brain-damaging side effects, does nothing worse to the user than alcohol would, and is non-addictive. It has medical benefits, and generally results in a relaxed, muchy-craving personality.

Alcohol, on the other hand, can have wildly varying affects on mood and personality, is highly addictive, has limited to no medical benefits (discounting mild consumption of wine), and can cause severe damage to your kidneys.

If alcohol is legal, marijuana has no reason not to be...

Where are your sources?