I think some of it is a personal issue. I sometimes don't like to take an "aspirin" for a headache as I want to experience my life, good and bad, in its entirety and feel the pain is "telling" me something sometimes. It's very hard to know when any given thing "causes" any other reaction; I've been having a lot of problems with an asthma med I think but I also think we're more complicated than direct one-to-one problems so how/when can we know if a side effect is caused by a med or by something else we're doing/thinking, etc.?

Just yesterday I was worried about my med but today I'm doing quite well (didn't alter how I took it). I think if a med makes us "okay" for real, what I hear you say, then it probably isn't addiction but we can't really do anything about a "possible" addiction until it becomes real? If the med helps, take it. If you get addicted (which, to me, would be that the med interferes with your life in any way, either literal or subjective) then it becomes something for an individual to deal with as it's their life quality. Were it possible to be addicted, not have it impact one's life negatively (which includes becoming a "thief" to support a habit; lying, cheating, or otherwise breaking laws or hurting others, not working/supporting one's self, etc.) then I'd say there was no problem with the addiction.

Did you see the movie, Cider House Rules?