It isn’t necessarily black and white. Gambling has a physiological component. Dopamine agonists can cause compulsive gambling in people that never cared to gamb

It isn’t necessarily black and white. Gambling has a physiological component. Dopamine agonists can cause compulsive gambling in people that never cared to gamble in their lives, due to purely biochemical alterations in reward pathways. I don’t hope to define psychological addiction as you put it. The distinction to me lies between physiological addictions and other compulsive habitual behaviours. Examples of the latter include things which are clearly not addictions, eg cracking your knuckles, checking you turned off the stove 5 times. Marijuana doesn’t have a big physiological component in general. As always, some people quite happily perform behaviours habitually but are not addicted (eg some smokers).