I cannot tell you what the answer to that question is. That is up to you. I did find this cartoon very truthful and something to ponder upon for parents. Take a look:
The Flower contrasts a utopian society that freely farms and consumes a pleasure giving flower with a society where the same flower is illegal and its consumption is prohibited. The animation is a meditation on the social and economic costs of marijuana prohibition.
Animation by Haik Hoisington
Music & Sound Design by Ion Furjanic
You can download the music here: