That's the argument though, that addiction literally means physically. That's why people say weed isn't addicting too even though it very much can be mentality addicting. 

[But Here's the wiki on addiction.](https://en.m.wikipedia.org/wiki/Addiction) Which literally uses a cocaine addict's brain scan [as an example image.](https://imgur.com/Rz7vYV3.jpg) Also technically with weed it counts too, as rewarding stimuli and people definitely get addicted to it, just not physically dependant which is what people are using as the definition of addiction because it's "easier" to stop using something that doesn't cause physical dependence. That doesn't mean everyone will get addicted to even the most physically addicting substances, obviously. And don't get me wrong, I have no problems with weed(smoked it for 10 years until it started triggering panic attacks) or some other drugs if used responsibly. But cocaine definitely fucks up your brain, literally, not just mentally.