I don't see any logic in anything you just posted.
"Less demand for animals means less domestication. Less domestication means less population".
Yeah, but what you forgot is that for the most part you are talking about chickens and cattle, two species that don't really survive on their own, or contribute to any ecosystems.
" Consider for example the number of domesticated cats versus the number of feral cats that were born in the wild. The populations of wild cats in many areas are not too good."
What does that have anything to do with what we are talking about? Feral cats are a problem in many areas, for better or for worse. Doesn't relate anything to the topic at hand.
"Vegetarianism is a very poor excuse to save animals. A better way to save animals is to educate people about ecosystems and develop habitat for animals. An omnivore who did this would be helping animals more than a vegetarian who didn't."
You still seem to have no clue on what "animal rights" vegetarians are saying. And I separate out different branches of vegetarianism - could be for many reasons - health, religion, or animal rights. But again, what does boycotting the eating of mainly chickens and cattle have anything to do with protecting herd populations or species??? We ain't over in Africa on the Serengheti protecting wild game herds - we are for the most part talking the consumption of factory raised animals in the U.S. And I don't consider a factory farm in Arkansas to resemble any semblence of an "ecosystem".
"The most respectable animal lover I've ever met was a hardcore hunter. He owns a local gun shop. He hunts animals, but he also recognizes the natural order of the food chain. There is a natural balance to the world. It is this balance, and not the number of animals slain or consumed, which must be maintained. Predation is a fact of this planet, regardless of how many humans choose to become vegetarians"
Finally I can come close to agreeing with you on something, although I do think that some of the most dedicated animal lovers have been those that don't kill or eat them, although I have done both. But what does killing deer or wild turkey or rabbit have anything to do with the subject at hand. Game species are game species......People in this country eat factory raised animals. A completely different animal, pardon the pun. You seem to be comparing deer to factory raised chickens to lions roaming the plains of Africa all in one fell swoop.
Edit -I can see the vague point that you are making here. That ecosystems need to be protected. But very few actually do it. Hunters donate money to buy land to protect habitat of species that they kill, usually birds. They aren't giving money to protect African savannahs that don't allow hunting. People need to do more, that is understood. But I will give you this analogy. Some people are ardently opposed to abortion. I am not going to tell them that if they really want to protect children they should donate and get involved in outfits that help disadvantaged children and not worry about abortion. Yeah, it would be great if they or anyone did it, but they have a moral problem with abortion so all of the other issues are really just side issues to them. Same with people who don't eat animals for moral reasons. Whether they are involved in protecting habitat or not.