As a drug it's actually pretty benign.
But every time I buy coffee, I am feeding the beast of global exploitation and environmental damage.
Compared to drinking coffee, the alternative is: simply don't do that. And if I take the alternative, the carbon footprint, other environmental footprint reduces a bit and reduces the profits of exploitative power structures.
The industry is just a waste of fossil fuels and logistics, really, seeing as it serves no particular purpose because life runs just fine without coffee.
I purposely avoid caffeine, meaning no coffee or soda. But once every 3 months, when I've slept like shit, and have something important coming up? I can drink one cup and it'll feel like a genuine mild stim for an hour - enough to get me out of the house and on the way.