That's an overblown reaction: comparing yaml use to murdering people? Come on.
And you examples are flawed.
> If fossil fuels were so bad for the planet, nobody would use them.
It's not the planet that's using fossil fuels.
> If super-processed fast food was so bad, nobody would eat it.
It's probably not as you make it out to be, and another thing: food costs money. People choose with their wallets, whether you like it or not. Processed foods are usually cheaper. YAML, JSON, XML, they all cost the same; their indirect costs are really hard to measure.
You are very naive if you believe that. This can only work if people can meet the following requirements:
* People are rational and will always or at least statistically enough times will make the best choice.
* People are egotistic and will only do what's best for them, they don't consider the benefits of others.
* People know everything there is to know about nutrition, they can deduce the short term and long term effects of consuming any quantity of any chemical in any combination with any other chemicals based on precise knowledge of their gut functionality, the bacteria that lives in it etc.
* People should be able to predict the future, at least enough for them to be able to make rational choices about the effects of their current actions. In particular, they should be able to predict famines, invention or hybridization of species of various agricultural plants, developments in pharmaceutics helping them to combat various eating-related health problems.
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People don't choose. They happen to eat super-processed foods, drive energy-inefficient cars, take out mortgages they cannot pay etc.
Finally, eating from a dumpster is even cheaper than eating super-processed foods (whose price can very much depend on the scale of manufacturing rather than anything else). For some reason most people choose not to eat from a dumpster...
When people say "it's bad for the planet", we need to assume that "it's bad for the humanity". The planet does not really care about CO2 emissions, humans suffering/dying from them probably do.
> If fossil fuels were so bad for the humanity, nobody would use them.
Where do you see me comparing YAML to murdering people? Please read that place again. I compare murdering people to the inconvenience of having to wait in a queue.
And you examples are flawed.
> If fossil fuels were so bad for the planet, nobody would use them.
It's not the planet that's using fossil fuels.
> If super-processed fast food was so bad, nobody would eat it.
It's probably not as you make it out to be, and another thing: food costs money. People choose with their wallets, whether you like it or not. Processed foods are usually cheaper. YAML, JSON, XML, they all cost the same; their indirect costs are really hard to measure.