My girlfriend got angry at me when I pointed out drinking coffee is same as taking drugs.
Coffee has a lot of caffeine which has
1) No nutritive value
2) Acts as stimulant (of course a mild one)
3) People repeat it, over time the amount of coffee people take increases to produce the same effect.
Just because everyone drinks it doesn't make it something good.
2/3…caffeine likely abuse it consciously from the start to perform "better" in whatever job they are doing. They may develop an addiction and wreck their own bodies but that is their choice to abuse the substance.
A lot of things have caffeine, eg. #chocolate.
So yes almost anything can be considered a drug or therapeutic, the important thing is whether a person is addicted. If your girlfriend is able to moderated her intake then using the odd stimulant on occasion is likely perfectly fine.
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