4 thoughts from a cannabis activist here:

1) I agree with many: age should be 19+. Even I am surprised by the 18 recommendation. Keeping it out of the high schools will be made easier through this single change.

2) Marc Emery is right - the only people who should be able to dictate how, where, and when adults use cannabis should be cannabis users. Period. These matters do not affect you, so please stop commenting on things you do not understand - it's ignorant. 

3) Your worries about 'the children' & 'dangerous roads' are red herrings. Consumption patterns of cannabis only marginally change over the long-term after legalization. Which means cannabis consumption, and these potential problems, are already here.   I was encouraged to see the TF address that reality clearly.

4) The TF has to balance these realities with the reality that outright prohibition does not work. I think they did a pretty good job on balance, and I think they should be commended, not mocked, for their efforts.