I totally understand where you are coming from, and generally don't agree with the "disease" model either. We've had many discussions on this board about that.
I guess my thinking has evolved more toward the eastern/spiritual concept of sickness and disease, and away from the western/medical concept. In other words, seeing addiction and codependence in a more holistic light as spiritual "sickness" more than medical "sickness." Dis-ease, if you will, rather than disease (something you prescribe a pill for)
These are my opinions only. I don't expect anyone to agree with me.
L