I think it is depended on everybody health situation.I select the veg-life one year ago and I feel my physical conditon have become better,because I didn’t catch cold even one time since I stopped take meat,and my body weight did not grow even if I ate a lot in my last year. The reason I seleted the veg-life is that I readed some essays which subjuct is on animal and envirment-protection. And I think the root cause of why we don’t understand the animal thought is we have differenet body-structure from the animal’s. The most simple example is some people regard the disable group in different way. Another reason that way I choose to be a vagan just is because I think it is my best way to protect our envirment.Before I saw some documentry films about how the cows are fed by corns instead by grass.It takes a lot of money and unsustainable resouses to transport the manufactured food by corns.and these huge companies can not keep the safty ang qulity of the meat.So I think if everyone can stop cosuming the meat the air will be better.It is just my point of view