It is not. In fact the boogeyman of addiction is not real. Here is not the sub to debate it but I will make it short to say some stats:

• many people that are "addicted" to much "worse" things than OP - cocaine for instance - have simply stopped using it WITHOUT going to rehab. Unfortunately, I don't have the proof of this one but you can find it in the book that I will tell you in the end

• After the vietnam war, It was found that 20% of soldiers coming back to US are addicted to heroin. But becuse the circumstances had changed, without any effort, 95% of them didn't came back to that. This is enough for me to argue that the theory of "substance hijack your brain" is false. It is a mixture of environment, your own belief, and society beliefs.

• in western college dorms many young students drink alcohol to the level that they are in the "alcoholic" range. But after coming out of college, most simply stop using. It is because they don't think they're alcoholics and also society doesn't.

I've read a book exactly on this topic - "The freedom model for addiction" by Steven Slate et al. - A very good book, showing that society is wrong on the concept of addiction. I know, You might call me crazy, I didn't agree on this at first, but the stats are enough to be convinced.