Being a father of a 3yo I think about this a lot. I won't be as open and "cool" as my parents were. I will NOT let my kid have cannabis at anytime before he graduates high school. He will have to make his own decisions in college, can't stop them forever.
Do like my mom did and smack the shit out of him/her for weed till hes like 15 or 16 and if he is still into it then give him a vary little bit so he doesn't have to buy it off the streets lol
Whats worse your kid smoking with you
or
your kid getting arrested and having that in his record???
Make it a controlled environment for weed and not were he/she has to risk Arrest or laced weed
But dont just give him grams upon grams when he asks
Just like once every few months let him toke with you or give him like half a gram if he does what you ask and keeps his grades up
Im serious id do that with my kids
Plus it will give him incentive to keep his grades up and do chores
And he wont be exposed to harder drugs thats a big one I forgot to mention
But to each his own
I've been through sketchy situations trying to buy weed from people
Ive almost been stabbed and had the fuck beat out of me for my money
Lucky I had a friend who was also a big time dealer and he'd let me have a few grams for being back up on deals and driving him up to the store to buy cigarettes and shit lol
Mostly we just fucked around and listened to music lol