I think you might find that a relatively high fraction of the people who eat vegetarian (or are trying to) are also generally reluctant to eat human flesh.
Wow... how clever... equating eating meat with cannibalism. You may equate your sentience with a cow or pig... but I have a higher regard for humanity.
It's not about the species we are dealing with, rather it's about believing that what makes us human is that we strive to treat all life forms with care and respect.
I AM SO FUCKING STAR TREK
So it's murder to eat a fruit or vegetable....? I mean they're living too