It's the same as an alcoholic buying the cheapest nastiest booze they can get for the money (source: previous heavy drinker and I used to do mental calculations of what would get me pissed for the least money). It's not about taste, it's about feeding an addiction. At least when I was drinking/drugging myself stupid I was prepared to admit it was an addiction and didn't go on the internet posting pics of my track marks reeing about heroin/booze shaming.