Per usual, I made my point and you didn't get it because "getting it" is not your strong suit.
Alcohol and tobacco have a long history in America. An argument can be made that the country was built on those 2 products, along with a few others. We all understand the negative things that come with those products, but they were ingrained into American culture from its inception.
But this is the important paragraph if you are capable of getting it. My point is that pot is deadly (I have a grave to prove it), it's addictive, and it causes psychosis. Given that we already tolerate products like alcohol and tobacco that come with bad health and/or social effects, do we want to introduce new things into that mix in our culture? I don't -specifically for that reason.
Legalizers are all about hyping the theoretical advantages of legalization, but minimize or ignore the harsh reality of the costs. Legalization relies on a hyper-idividualistic libertarian context, but the truth is that we live in families and communities and what each of us does affects everyone else our life touches. Again, I have a grave as evidence of this harsh reality. So, before we all go all in on our 4/20 enthusiasm, we should consider this aspect of the cost. Will this enhance families and communities, make children safer, make our society more stable? It is hard for me to see how facilitating and endorsing more intoxicated, lazy, unmotivated, paranoid, ravenous hungry people is a good thing, but these are the kinds of debates we are having.