Drugs

So I'm sitting in my 10th period class and my friend tells the sub that caffeine is the cousin drug to cocaine because of the way she was acting how crazy she was and hyper active. So she starts going in about how she's some sort of drug master or something and she can tell what drugs someone has been doing in the past 3 years just from one look at them and what not which I find kind of strange because if did a drug exactly 3 years ago, sorry if I'm wrong but I doubt you would be able to see that I've done a specific drug -.- So anyway we started talking about how many people even children now-a-days do something like smoke or something and my teacher was actually sitting asking questions like if I was a regular smoker of let's say weed or something how much would it cost for me to smoke let's say three days a week and we were actually talking bout how young adults, teenagers and what-not pool money up and blah blah blah but we were also talking about side effects of drugs and what not and that brings to another point.... Drugs are poisonous to our body in some way or another regardless if you don't feel it now but isn't that true about all things? I mean if you keep walking around the city the air is poisonous technically when you take your first breathe you are still slowly dying regardless.... not to say hey everybody dies don't care about living of course live your life to the fullest, I mean I quit trying to talk people out of certain things.... sadly fr instance smoking let's say cigarettes or weed we all die some time but hey let em' live how they live.