For me veganism quite simply makes sense, on all levels. You can't pick a hole in the case for veganism! I think the best way to advocate it is to be a living breathing example of a healthy, happy, compassionate vegan, which is what I try to do. And the best thing about being vegan? Well apart from the delicious vegan mint slice at Revel cafe (!) it would be being able to look into any animals eyes, and say with conviction and complete honesty "you don't need to fear me".