Most of us have seen, and many even lived beside, tragic situations associated with drug addicition and other poor choices. This can end in horrible waste. However, and as ever, some people chose dangerous behavior and habits no matter how bad the known outcomes and no matter how poentially terrible the effects on those who love them.
The reasons why they do so are varied. but the decisions are the same. The thrills or escapes, or etc. at the time of choice are more important to them than long-term health - and, often, life itself.
This is not to judge their goodness or evil in relation to others - it is to note the reality of what we do as humans. Although not a Darwinist, I understand his ideas and theories - and those who see such things at work in these cases are making an apt application. The issue is not the price, or potency, or availability of the drug or activity - the issue is human behavior. Sometimes we can be our own worst enemies. Selectivity matters.
