It absolutely does have an affect on your mental state – people commit suicide like Dan said, my other half when he does it, has attempted to take his own life.. it is absolutely horrendous stuff.
It completely changes people – they dont care whats on the line, the coke comes before kids, marriages ANYTHING.
its hard to accept but when it grabs hold of you like it has your husband, the person may as well be dead really as they arent the same anymore. It sounds harsh but it would be easier for someone to die i think because they are gone and not there physically.