Earlier quoted context omitted.
This is the reality of air travel, 90% of the flights (thus the CO2 emissions) are made by a handful of frequent travellers. Moreover those are very unlikely to be willing to cut on air travel for CO2 emission reasons. So you shouldn't feel bad for your occasional air travel.
> So you shouldn't feel bad for your occasional air travel. I don't understand the implied ethical rule behind this mentality. CO2 emissions are always a problem and to be avoided. What am I missing?
Not possible without everyone simply deciding to not have kids.