why do you think people get addicted

I believe people get addicted to drugs, alcohol, smoking, etc, cause they liked the feeling, and thier body craves that feeling with weed. Heroine on the other hand releases dopamine into your brain then your brain goes well I don't need to make this anymore cause its being done for me. That's the main reason behind withdrawals cause your brain needs time to restart making the dopamine. Smoking is addictive because of nicotine but your body likes the feeling of it so you keep doing it out of habit. I have no idea why alcohol is addictive really, I think alcoholism is fake and people are just cowards and need something to get their mind off things, so they drink, same with caffeine.