Kevin,
We may never see eye to eye. I will agree that some species can offer medical benefits. Not all critters, and many treatments/cures may never get discovered.
But you are not seeing the other side of the coin. I'll go back to AIDS. 40 million people have died & 10's of millions today live with AIDS. Consider that tradeoff. Let's say there was one specific species of monkey that started this. I would clearly say that taking out that species would be worth the 40 million deaths (so far). Can you agree with that?
And we don't know which species will be the source of the next 'AIDS'. I'm not saying we randomly take out critters, but I am saying it's not all one-sided.
I agree that the disease came from chimps, but was a different monkey (ie: man) that started the epidemic.
Humans started the 1918 influenza epidemic by how we keep farm animals.
It was war, famine, lack of education, and so forth that allowed HIV to become a human disease.
Any species--from cockroach to bald eagles--can be a source of disease if humans don't do the right thing by nature.
If it wasn't chimps, it would be the rhesus macaque, or the black rat.....or something else.
Here in Florida, for example, we have monkeys that are introduced from Asia, and they carry Simian Herpes B. I'm actually moving to the area where these things have established themselves.
It sounds like a bad joke from the Beverly Hills Cop movie.....but Simian Herpes B is no joke. 75% to 80% of all people who get infected will die a miserable, protracted death....and there's no vaccine and no known cure.
Further, about 40% to 60% of these monkeys carry the disease in an asymptomatic form.
Now, my point is that it's peoples' fault that these things are here, multiplying as an invasive species. If there ever ends up being an epidemic, it's the fault of humans, not the monkeys.
And yes, before you suggest that I'm a tree-hugging liberal, I do believe that all of these animals should be eradicated with extreme prejudice.
In their native environment, less than 1% of the same monkeys carry Herpes B, as the natural world has a way of balancing things.
Here in the States, these animals don't have the appropriate predators and parasites to keep them in check, so--being out of natural balance--the disease spreads among them.
I believe that there were similar issues with humans blatantly giving nature the finger, and that's what really enabled the AIDS epidemic to occur, and what enabled it to jump from chimps into humans.
Eradicating chimps, therefore, wouldn't have made much of an overall difference.
And I do believe that it's only a matter of time until Herpes B changes into a form that's much more dangerous and contagious to people.
Even as an on-again/off-again vegetarian, I will ruthlessly kill any of these things on sight. People in Ocala and Silver Springs have a habit of feeding these things, and--being intelligent, and having hands--they occasionally open doors and windows and let themselves into your house.
They'll go through your pantry and fridge, helping themselves to your food and garbage.
It's always bad when people acclimate wild animals to human food, so I believe that it's only a matter of time until Herpes B changes into an epidemic form, and people die in droves.
It will have been people that created this....not the animals.