Now off topic. (I really tried hard to stay out of this). Political beliefs, religious beliefs and morality are all relative. Whether morality embraces any natural truths is unclear - it's been debated by a lot of wise people over the last few thousand years.
What is not relative is life. Life is fascinating. Procreation is fascinating. Understanding the fringes of life is frustrating - where does it begin, where does it end. Answering the questions of life in absolutes is dangerous. But when questions of life are answered in terms of convenience, social burdens, stereotypes and presumed inevitablility (predestination?), the result can only be described as selfish, and puts us on a social scale with animals.
Then again, from a purely scientific standpoint, there may be no difference between humans and animals (or plants or minerals). We are, after all, composed of the same few elements. Maybe that is the dividing line in our fundamental beliefs - either humans possess something unscientific or they don't.
Life expands until it sufficates itself. Germs in a petri dish will multiply and fill the dish until all the food is consumed or their own waste products poison them. Around 1900 the deer population in the Kaibab forest of AZ exploded. They ate everything in sight including the bark off the trees. Their environment became so degraded the population collapsed not to recover for many years. It is believed there is a deer cycle of boom and bust population. Looking at the filthy cloud over Phoenix that comes back within two days after a rain one tends to think that people have reached a natural population limit. Only a little worse and deaths from poison air will slow growth. The anti-choicers are fighting an uphill battle against the facts of nature. Either people voluntarily limit their numbers or nature will cruelly do it for us.
A study of mice badly over crowded found an increase in violent acts against each other, insane like behavior and homosexuality. Could it be that our booming prison population is related to crowding? We are indeed in a growth business.
I hope your stock research is better than your animal. Read a little more and you will find the reason the deer population expanded was because T. Roosevelt put an open season on any animal that threatened the deer he loved. A bit of environmentalism gone bad!