We cant do it now thats true. But isnt the process you described called photosynthesis? Using Sunlight (heat in form of UV Waves) to turn Smoke (CO2 and bunch of other stuff that isnt used) with Water into sugars which build the structure of plants?
Luckily it isnt that easy to burn down every server as burning carpets in south america or books in other places
Im kinda doing the same. Cant say I always do. If im very hungry after a party and only the nearest gas station is open, i grab a snickers.
But what kind of active action are you talking about? Not using facebook seems like a legit boycott of it. Is it actively speaking about not using it and informing other people?
Yes. And stop the criminalization of being a drug addict/user so it can be easier to end the viscious circle. Help the people to get off of it and dont punish them for using it.