While I find the personal stories heart wrenching I was responding specifically to this comment that seems to take all responsibility away from the addict.
"For the addict there is no choice. The disease chooses you."
I still say there was personal choice involved, and actually Roars link from drugabuse.gov pretty much confirmed that, though they hedge slightly. Now the person might have issues with how they made that choice, or have compromised decision processes, and have personality/behavior issues that make it harder to say no to that choice, but I stand by my original post. And I also stand by not wanting to be an a$$ about it.
Luckily none of my immediate family have suffered from this particular disease, and I thank God for that everyday. As a father it must be heartbreaking to deal with. Prayers for all that are dealing with it personally or with a family member.