I see nothing wrong in a Vegan diet, if people want to do this because of changing dietary requirements ( cutting out foods they normally eat, want to cleanse their body or loose weight) or for ethical reason's, it's not a problem.
It can become a touchy subject when people are so forceful with their views/opinions or on a crusade and pour scorn on other's who don't agree with them.
How do vegans make cake?
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Eggs, milk, flour, sugar, butter, chocolate.
All these common cake ingredients are vegan to begin with or readily available in a vegan form
- except the eggs.
Many vegans like to use egg replacers, which are easy to make at home.
Typical substitutes can include things like banana, flaxseed, applesauce and chia seeds.
Vegan Amy Kennedy, 21, from Essex, tells Radio 1 Newsbeat: "Vegan cakes are becoming more and more accessible, and a lot of the big supermarkets are releasing vegan cupcakes.
"A lot of biscuits are accidentally vegan too."
Since when has 'milk' and 'butter' 'chocolate', been vegan to begin with - unquote

lol
Or have I read it wrongly ?