I don't need any research I've witnessed this stuff with my own eyes. I know a guy who got so hooked on weed in high school he's smoking that shit every day for the last 7,8 years. He got to the point where he doesn't even feel the effects of it anymore, he just walks around high all the time; he can't even speak normally, his every movement is freakishly slow and he just looks like a God damn idiot.
One of my friends on the other hand has done everything from weed, to XTC, speed all the way to cocaine, including cocaine. He never in 5 years got addicted to anything, yet he took stuff every friday and saturday during that period. 2 years have passed he has not taken ANYTHING, nor does he intend to.
I've tried lots of stuff also and was never hooked on anything. Everyone goes through that phase, some pass it quickly, some take their time and some never do. It all depends on the person.
I don't care if the research says the "average Joe" will get hooked on cocaine on the first sniff, I'm not your average Joe. I don't care if 1000 people get addicted like that, I know the 1001st doesn't ever have to get addicted. It's all propaganda.
Just to be clear, I never did coke and I learned drugs are shite and they cost too much. Beer all the way!