Since you really want to go there, let me. BTW I am sure you will fail to note after this that I was pretty reasonable until you wanted this unreasonable argument because the OP was flawed.
The OP wasn't meant to apply to all
Actually, you can because drugs are not guns. Pot is not a gun. You can use pot all you want and a dangerous projectile does not inherently have to leave your body. When you use a gun a deadly object comes out. That is just what it does. Some comparing the two is going to get you into trouble when you want to get all specific and technical.
They can both be deadly in different senses. (I'll broaden out to all drugs as well.) I agree with you, weapons are different than drugs, but not much different. Some such as alcohol, opiates, ect. can kill directly by OD. Pot, and other drugs can also kill indirectly when the user is irresponsible, say with their car, or with certain jobs. In fact, you've pointed me to other similarities between guns and drugs. I know this is very broad, but they both directly or indirectly kill. You have either the violent criminal, or the irresponsible user. The violent criminal will kill someone else on purpose, and I acknowledge this is a major difference between the two. They're not the exact same, but on the other hand with firearms, you have the irresponsible user, who will either kill themselves by mistake, or on purpose. Another similarity is drugs are also used in suicide. Quoting the CDC, 2005-2007 "Poisoning is a leading method in suicide deaths, and drugs and/or alcohol make up 75% of suicide deaths due to poisoning.)
Yes, but your argument neglects a huge difference. Pot has purposes far outside of killing people or causing damage. A gun is not medicinal. A gun does not make one feel groovy. A gun is not a mind altering substance. A gun kills or does damage to something. That is it's purpose. I can use pot as recklessly as possible in front of you and you are never in danger. If I use a gurn recklessly around you then you could be shot.
Someone can also use pot recklessly while driving or operating heavy machinery and kill someone. You've made me think of another parallel, both weapons and medicinal marijuana are used against outside threats, and inside threats. With pot, it's in the form of an illness. With weapons, it's in the form of someone trying to hurt you or others around you.
Again, seems to be a bit false. Look at placers who have banned drugs and guns. Drugs remain in those places, where some have made huge strides in removing guns. Why is this? because guns do not serve a huge purpose in life anymore, where drugs do. Drugs are recreational and make people happy. Guns are there to kill. If you do not want to kill someone a gun becomes a bit pointless.
I strongly disagree. Guns serve the purpose of defending life. I agree less often now than in the past, but they still do. Here's what I think is the last additional similarity. People use both to better their lives in different ways. With guns it's security, and recreation. With weed, it's relaxation, and perspective. (That's only my opinion, I'm sure it's different for some people.) They both can also worse peoples lives. Firearms do in obvious way, weed does in subtle ways like an irresponsible parent, but not all are irresponsible. It can also with irresponsible drivers, but not all smokers drive when they're high. Lastly, most gun owners don't hurt anyone with their guns just as most smokers don't hurt anyone smoking.
It is a bad argument to say you cannot argue one without the other. Simply their purpose and uses are different which makes them separate issues which can be argues separately. Since that is all you want to discuss it would seem you are pretty much wrong. next time perhaps you want to be reasonable instead of looking for a pat on the back.
I agree both issues can have different implications, but I think I have shown above they also have many similar implications. In the case of suicide, they have the exact same implication.