I had been reading up on drugs a little while ago and something I read had cocaine in a class of extremely addictive drugs which confused me, because I've known people who have used cocaine and and they didn't get addicted. I've also known people who have used cocaine and have screwed themselves up because they got addicted to it. Maybe it's a quantity issue, or maybe it is has to do with the chemical make-up of the user.
In general, I think that we don't understand addiction well enough. Some people could become addicted to anything. Some people become addicted to food and they become fat and yet they continue to eat a giant bag of potato chips every day. They can't stop eating bad food and their health care costs rise which affects other people and causes insurance premiums to go up. So, we should make Lays Potato chips illegal. And Krispy Kreme. Shut that chain down. :D
It's kind of hard for me to make an argument one way or the other as far as legalization of drugs goes (I'm American so I use a z) because we don't understand addiction and we don't understand the brain. We know that if you don't engage in pleasurable activities, then you can't become addicted to them, so we've tried to restrict access to certain pleasure-causing substances to rid ourselves of the negative consequences. Maybe that's not the best approach.
I do know that some drugs will mess you up more than others and that's why I would lean toward legalization of marijuana only, and not legalization of all drugs. Marijuana is illegal and so is crystal meth and no informed person would say that marijuana is just as dangerous as meth. But, to the uninformed 13-year-old, pot=illegal and meth=illegal so pot=meth, so I'm going to do meth. I know that's not the best argument one could make, but it happens. And we all know that the war on drugs doesn't work. Legalize marijuana. 4:20. woo hoo.

