[robbiep]

Addiction and the addictive ness of drugs is a multi factorial gradient. It requires the right psychosocial conditions, the right environment, and the right drug, and a person who might become a heroin addiction one day may not be so at a different point in their life.

Roughly 1-2% of people who try heroin once are done forever; many many try once or twice and aren’t. For cigarettes the rate is about 20-30% who become addicted