Vegan Hitlers

Haiiii! I don't know if you're still using this account but just saying that I'm writing a book on how to maintain a healthy (vegetarian) diet.

VEGAN 
          Compassion 
          Nonviolence 
          For the environment
          For the people 
          For the animals 

Can someone give me a reason why people SHOULDN'T go vegan?? There's no good reason not to go vegan in my opinion 

Everyone should go vegan!! :)