Then there is the matter of psychological dependency, as one who never drinks at all can find they must be drunk to engage in sexual activity, and this is as surely an addiction as the chronic drunk. The tendency to develop addictions is inherent to all life, and is most definitely present on other worlds, particularly in intelligent species. Take the simplest amoebae, given the option of a food bath rich with nutrients or one thin in this regard. The amoebae will choose the rich and adjust to it, changing the thickness and composition of its cell structure so as not to become inundated with nutrients. What would happen then if the amoebae were placed in a thin nutrient bath.
Humans develop addictions for the same reasons simpler creatures do, when given the opportunity.
It tastes good, feels good, and who is thinking about tomorrow. Most human addictions begin in situations where there is no concern about tomorrow, not because one is carefree but because one is in such dire circumstances that the likelihood of a tomorrow seems dim. Beyond feeling good or tasting good, one wishes to escape. The front lines during war, the slums, a brutal spouse, an abusive parent, chronic pain, all lead one to look for an escape, any escape, if only for a moment. Dealing with addiction here first requires that the cause, and not the symptom, be addressed.