But the problem is that its very hard to see the diffirence when someone is smoking. And in most cases its the bad stuff rather than the good. Yet with alcohol, its usualy light alcoholic drinks.
But the only reason alcohol is accepted is because history has proven that its one of the best supporting things for relationships. When in a pub, alcohol lowers a lot of treshold for communication (smoking doesnt do this!). This social aspect is a major driving factor for relationships. And evolution naturaly benefits from reproduction, which these relationships generaly cause to happen faster. As a result, the human body adapted quite well to it and it rarely causes physical issues as a result.
Toasting on that is only just a minor action, it isnt even close to alcohol abuse (which is the only actual problem with alcohol, unlike smoking which is a problem very early). It takes quite some time to get someone to alcohol abuse, and nearly always the real cause lies somewhere else. Alcohol is just a mitigation tool for them (a poor one on that). A single toast rarely has caused any harm, yet the celebration part often causes a very positive reaction to the body.
Alcohol in low volumes is often healthy. And while natural tabaco might also have this effect, unlike alcohol its not a simple molecule, and therefor is going to be facing a lot more bad additives.
