I am not sure. Individual change needs to go hand in hand with systemic change. Individuals are also infecting other individuals, so there is a lot of theory that we won't have to convince everyone before a massive shift in our system can happen. Having 10% of the population go vegan would already be a massive unstoppable movement. Anyway, fact still remains that I dont know, but I can't just continue participating in the bullshit that we do to animals and subsequently the world .