Addiction is far more complex than chemical hooks, with a sprinkling of genetics; Johann Hari lays out the case for a re-think in this article.
“… human beings have a deep need to bond and form connections. It’s how we get our satisfaction. If we can’t connect with each other, we will connect with anything we can find — the whirr of a roulette wheel or the prick of a syringe. He says we should stop talking about ‘addiction’ altogether, and instead call it ‘bonding.’ A heroin addict has bonded with heroin because she couldn’t bond as fully with anything else.
So the opposite of addiction is not sobriety. It is human connection.”
– Johann Hari, via this article.