just let everyone make their own choices without disrespecting them. you can do nothing right on this earth, because every breath you take wastes oxygen.
But plants take in the CO2 (Carbon Dioxide) as food and make oxygen as a byproduct. The only reason the CO2 levels are rising is that there is too much from cars, trucks, boats, planes, and other machinery that the plants can't take in fast enough.
Vegans are only making it worse by shipping food that
A. The animals eat
B. Pollutes the air more through shipping
C. Most 'Vegan' foods are made in factories, further polluting the air.