It’s just a money thing Bruce, with no consideration of the environment, efficiency, or the needs of the average person. But at the end of the day, it’s funded by you and me.
They are being reckless with our money and just don’t care.
Thank you for (gently) educating me on this matter. Much appreciated. 
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From a thread about contrails and in which cars and planes exhausts were mentioned.
Unlike gas turbine electricity stations?