Whether or not anyone likes it, people have eaten meat in the past and will continue to eat meat as long as it's available. I think easing the suffering of live animals being harvested for food is a noble effort, but that still doesn't change the final outcome. There's still a market revolving around it with big money and it's going to continue to happen regardless of anyone's moral beliefs. Never mind those pesky insects, which I think nearly everyone here at least once has inadvertently slaughtered. Have they gotten any love lately? 
I don't know enough or pretend to know enough about vegetarianism to go into depth about that, but I do know that definitely is not a wise idea for your furry friends. We as omnivorous humans have that choice fortunately, right along with that crud on the floor we put in our mouths as babies. People get judged for it, sure, but what doesn't get scrutinized these days? If you want to poke holes in it, at least accept that it's not always going to go over well with others. As for the rest of nature, the choice has already been laid out for them.
I don't know enough or pretend to know enough about vegetarianism to go into depth about that, but I do know that definitely is not a wise idea for your furry friends. We as omnivorous humans have that choice fortunately, right along with that crud on the floor we put in our mouths as babies. People get judged for it, sure, but what doesn't get scrutinized these days? If you want to poke holes in it, at least accept that it's not always going to go over well with others. As for the rest of nature, the choice has already been laid out for them.