"I've heard the term "addictive personality" many times, but I'm not sure that some people are more prone to that than others. What I am sure of, from at times bitter personal experience, is that anyone who uses an addictive substamce, whether it be alcohol, tobacco, herion, cocaine etc often enough will become addicted in some way. As for sex, I guess that's addictive as well, maybe in a similar way to how gambling is addictive, you get hooked on the act (though I find sex is more fun).
I am not sure that is true; I know some people who use for years, and don't become addicts.
This is a topic I am familiar with; I have some years clean.
A saying in recovery is, I am not responsible for my being an addict, but I am responsible my recovery.
I understand that to mean that some of us are addicts, whether born with a predisposition to it (my father, sister, uncle, 2 sons, etc.) and that we had no choice in the matter. When an addict first begins to use, the payoff is so intense that they keep right on using.
That is NOT an exuse, or a way to hide from the consequences. It does remove the shame and guilt from being an addict.
When I stopped feeling guilty over behavior related to addiction, and saw the reality of what I was, it changed for me completely.
My take on the matter.