They do have a purpose !! To see people calling those that are dependent addicts is disturbing to me !! If my Dad is an addict because he is dependent on them to have a quality of life suffering from his cancer among other things, I just don't see that to be fair calling my Dad a addict !! I do think there is a difference !! I also hope that those saying such never have to see a loved one suffer, and never have to help them when they can't bathe or go to the toilet and etc alone !! But then there are those that would just stick them in a nursing home somewhere and forget about them until the time comes when you are standing at the head of coffin thanking everybody that comes by for coming !!