to Joey 1976:
OK, on to the specifics:
You say “marijuana is not a drug, it is a plant like tobacco.” Then you say “tobacco is more of a drug than marijuana because of all the things added to it.” I don’t really understand what you are trying to say here, as the two statements seem inconsistent.
In any event, while one might argue the plant itself is not a drug, it certainly contains a chemical, THC, which is, among other things, an intoxicant. It demonstrably affects perceptions, reaction times, and judgment. It increases heart rate and blood flow, and in some people can cause heart failure. At the same time, it could be reasonable to label tobacco as a “drug”, although not because “things are added to it”. Rather, like marijuana, tobacco contains a chemical substance, nicotine, which is a mild stimulant in small quantities, and in concentrated form it is lethal. Both plants also contain a lot of other stuff your body doesn’t need or want, regardless of whether anything is added to commercially sold tobacco.
So the question becomes: Is the nicotine in tobacco intended to be understood as included in the labeling of the non-therapeutic use of “drugs” as a grave offense? I think that is the point you are really trying to address here. You claim pot is not a drug, but tobacco is, because harmful things are added to tobacco by commercial sellers. Sorry, but that is not a valid definition of a drug, so it adds nothing to this analysis. What about saying tobacco is a “drug” because nicotine is a stimulant? That would be consistent in one respect with defining pot as a drug because of the psychoactive ingredient THC. But the clear implication of CCC 2290, as you correctly note, seems to be that moderate use of tobacco is not a sin, at least not against the virtue of temperance. (It could, I suppose, be a sin against the virtue of charity–love of self and of one’s neighbor–but more on that later.)
I think the correct interpretation is that nicotine, while a stimulant, is not an intoxicant, and therefore is not considered a drug prohibited by CCC 2291, when not used for strictly therapeutic purposes. Understood in this way, the prohibition against non-therapeutic use of drugs and the permissibility of moderate tobacco usage are not contradictory.
Getting stoned is a mortal sin. The confessional is waiting. God bless you.