system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: The overwhelming majority of people against Marijuana legalization tend to be ignorant about the topic.

I continually have these thoughts about something that appears to be such a common sense thing to me, but I also realize it's not really fair to call so many people ignorant. I don't even smoke weed but this just seems like such an obvious thing to me, that if you are against it you probably have not educated yourself about the topic. I have not really heard any good argument against Marijuana legalization and the data shows that it could help people in society by helping them get off of opoids. This next point is just from my personal experience but my friends who smoke weed often drink significantly less alcohol because they are satisfied being high, which is much better for your health then excessive drinking. Basically I am just looking to hear good arguments against legalization that could help change my opinion of people against legalization.
gpt
Many oponents to marijuana legalization are very educsted on the matter. They point to studies that prove the drug has negative short and long term effects on your health, especially on young, developing brains.   
They point to the risk of addiction, or of developing cancer, or diseases such as dementia and alzheimers, and and loss of cognitive brain function after long term use.       
They point to the risk of impaired driving, or the dangers of second hand smoke.   
They point to the lack of long-term medical studies, and severe biases and gaps in the scientific knowledge of the drug and its effects on the body and mind.     
  
For every anecdotal piece of evidence you provide of a friend who reduced drinking, or got off opioids, or for whatever reason is better off for having smoked marijuana,  they can point to anecdotal evidence of a friend who became a burnout and droppoed out of school, or who turned to heavier drugs after getting hooked on marijuana, or for whatever reason is *worse* off.  
   
   
Overall, these people see the *other* viewpoint as ignorant to the potential harm that this drug can cause.  They have strong reason to believe that recreational use of marijuana will increase sigficantly if made legal, and that this would have a negative effect on our society.     
   
And sure, maybe alcohol and cigarettes are worse for certain reasons.   But thay doesnt automatically make marijuana perfectly okay.