wundayatta summed it well. People can experience periods in their lives when they are extremely vulnerable to opening the door to destruction. Mental health issues like depression, bi-polar, anxiety, and schizophrenia, pain brought on by various events including a break-up, loss of a loved one, or being the victim of a violent act, severe loneliness, extremely poor self-image, and more can effect and alter a person’s judgment and inhibitions. People may be in a state where they simply don’t think or care about themselves and their lives or even have such self-loathing they consciously or unconsiously feel they deserve to have pain and damaging influences in their lives. I think its important to note that heroin users do not all inject the drug. Many start by smoking or snorting heroin and its not uncommon for some users to never inject. I think people who are not very experienced in drug use or have never tried heroin are at greater risk to try and get hooked on heroin using these methods as they would likely not perceive them as extreme, dangerous, or frightening as it would be to stick a needle into their arms.
It does not take long for heroin to seize power and control over someone’s life. The mental and/or emotional period of turmoil that led them to heroin may be a temporary dip in an otherwise normally positive life, but once dependence on heroin sets in, it is an enormous battle to rid it from one’s life. Numerous heroin addicts continue to use strictly to avoid horrific withdrawl. The effects of the drug, aside from relieving withdrawl symptoms, are not always what some may imagine. Minimal use, particularly when not injecting, to avoid sickness does not bring the user feelings of great euphoria or a strong “buzz”. Rather than acting as a way for the user to escape, it can be a brutal reminder of what their lives have become.
People who led fairly pro-social lives before trying heroin and, outside their own drug use, drugs are not of the various areas of their lives, live with their addiction differently. Some people manage to hide their past and present drug use from friends, family, and employers (it is rare addiction can be hidden forever) and try to continue on normally with life, while others will be pulled completely into the world of addiction, taking on a whole new persona, and will likely go down hard and fast.
The physical addiction to heroin is extreme and a person experiencing withdrawals can behave and act in ways people who know them would not believe possible. While there is an aspect of mental dependence, heroin is unique from drugs like meth, crack, and coke in the physical effects of detox. “Dope sickness” impacts the whole body, causing immense pain felt in bones, joints, muscles, and skin, brings on a feeling of discomfort that is so overwhelming it becomes torturous, can result debilitating reactions including low blood pressure, coughing, diarrhea, shaking, shivering, and vomiting. Detox is not a quick process and the symptoms of withdrawal can stay at peak levels for 3 to 5 days. Factors like background, education, and finances may effect a person’s options for successful lasting recovery, but make no difference to immense influence heroin addiction has on a person’s actions. There is no discrimination amongst those whose addictions have them living as slaves to the drug.