What's the purpose of alcohol? Drukenness.
What's the purpose of ice cream? Gluttony.
What's the purpose of a living room couch? Slothfulness.
What's the purpose of a vacation? Laziness.
This is the kind of logic which is applied to MJ and it leads to the heresies of Jansenism and Manichaeism, which is the error that natural things all lead to sin and temporal things are inherently wrong.
Then teach that to your daughters your "logic" and even smoke some weed recreational with them "in moderation" like "your logic" says or else shut up and stop being a hypocrite. Some people only learn by their mistakes. Your daughters will be cannon fodder if you teach them your "logic" that they can smoke MJ if it is in moderation. I could not have warned you more.
For the others, Pax Vobis has no common sense, ignore anything he says about MJ for recreational use if you have daughters or you will damage them for life. They will be passed from one man to the other the rest of their lives. Just go to a 55 & over community and see where all the pot smoking women ended up, married 2-4 times and now single and "dating". (same thing goes for the boys, but they won't just won't get pregnant)