The Logic of not eating meat
Thanks for sharing this.
One argument I come across is that apart from being symbolic, individual action does not help #1,2 and 3. Elaboration / links to articles that try to quantify the "real" individual effect could probably make the case more persuasive.
If the "real" impact is small then one could argue that the slight inconvenience in following a vegan benifit is comparable to the small benifit that individual action results in.