Sure, if you fly Düsseldorf - Stuttgart (companies do such things often), by all means switch to trains. For most of us it's not a reasonable alternative. My us

Sure, if you fly Düsseldorf - Stuttgart (companies do such things often), by all means switch to trains. For most of us it's not a reasonable alternative. My usual flight takes around 2 hours (7 hours door to door) but the train takes 16-17 hours including e.g. a two hour wait for transfer at 2 AM. The train also costs about 3 times as much. The climate's fate is not based on my 4 flights per year, so I refuse to have flight shame. Pushing the guilt onto normal people from industry is an appalling thing. (like fix your dripping tap, you're wasting fresh water... Ever heard how industry deals with water?)