@dawn16 Why do you wear certain clothes in public? Why do you post your guns? Why do you present yourself to others the way you do?
Stop pretending you're above social interaction.
We all do things for others to some degree.
The flip side of proving anti-vegans wrong (not just on the internet by the way, but in real life, outside) is giving a positive example for others.
No one is born vegan, we learn from others and follow their examples.
Showing people that you can be incredibly healthy and strong only eating plants can help motivate them to do the same.
A lot of well-intentioned people are brainwashed or tricked by carnist/anti-vegan propaganda, I don't think there's anything wrong with pushing in the other direction... simply interacting and bolstering public spaces like this is doing the same by the way.