As far as some people are concerned, us “holier-than-thou” vegans can take our self-righteous and condescending views and stick them where the sun don’t shine (and while I’m tempted to say this attitude only comes from meat-eaters, I know a number of vegetarians who feel the same way).What we put in our mouths is a personal choice, they argue, and if we don’t want to eat animal products then fine, but we have no business telling others what to do and are often accused of “ramming” our beliefs down other people’s throats.
Aside from the fact that we still live in a part of the world where we can freely offer our opinions without fear of persecution, and that stating an opinion isn’t the same as forcing someone to do something, most people really don’t “choose” to eat animal products at all.
Instead we’ve been conditioned to eat what we do, just as we’ve been conditioned to believe in one religion or another. In most cases it was our parents who trained us to eat animal products, literally shoving their own beliefs down our throats when we were young, which in turn had been shoved down their throats by their parents, and so on, just as religion has been passed on from one generation to the next. We teach what we know; it’s human nature to nurture.
Still, a lot of people defend their eating habits on the grounds of personal freedom, saying it’s their “right” to eat whatever they want. And while the Canadian Charter of Rights and Freedoms guarantees freedom of conscience, religion, thought, belief, expression, the press, peaceful assembly and association, it doesn’t guarantee the freedom to "eat whatever you feel like". Neither does the United States Constitution nor the Bill of Rights (I checked).
But in the end it doesn’t really matter. Let’s say meat-eating is a personal choice. So what? Rape and murder are personal choices too. Does that mean it's okay? So instead of defending one's choice to eat animal products, we need to ask ourselves, is it the right choice? Does it justify our claims of being a peace-loving and moralistic society? Is it a true reflection of our concepts of mercy and compassion?
We concluded long ago that the murder of other humans is morally unacceptable so laws were created to reinforce that position. Slavery, child labour and racial and sexual discrimination have also been outlawed (for the most part anyways). We don’t condone or encourage these activities even though they too are “personal choices”.
Killing animals for food (among other things) is still legal, but since there are other ways to maintain good health and nutrition, it's wrong because it causes unnecessary suffering and death and deprives other animals of their freedom and their desire to live.
Being vegan is more than just a personal choice. It’s a commitment to non-violence and a reverence for all sentient life. No one has the "right" or "freedom" to eat or do whatever they want if it causes injury, suffering and death to others.