Earlier quoted context omitted.
> Humans do not fit the model of "rational self-interested agent" commonly applied for economic models. They generally do -- the misalignment comes from analyzing people's behavior according to presumptive interests which have been externally attributed to them, instead of observing behavior in order to ascertain what people's interests actually are. > Gambling and addictive substances are two hugely profitable busin…
I take it you view drug / gambling addicts not as people with a mental health issue making irrational decisions, but rather fully rational people that prefer "short-term pleasure over long-term stability"?
Or, to put it another way, the irrationality is a matter of having contradictory desires in the first place; choosing to act upon one and dismiss the other resolves the irrationality. The fact that some people make the trade-off in the opposite direction that you would doesn't make them irrational, it just demonstrates that people are different.