[quote author=“jetsetjason”]really bad idea, some religions also have a strong emphasis on arranged marriages, having children etc. when folk should just stay single and make room for others !
http://www.vhemt.org is a bit extreme, but you get the basic idea, people cause ecological harm, less people is good 
It is people that define the concepts of good and bad. Without a conscious mind to make value judgments, there can be no value judgments. Your idea is based on the fallacy of intrinsic value, the belief that some things can have value in and of themselves, apart from humans that value them. There can be no value without a value-er. Unspoiled nature is of value to some people for esthetic reasons. But then they confuse those esthetic reasons for some metaphysical intrinsic value.
Also, it makes the mistake of thinking of human beings as something separate, apart from nature. Humans ARE a part of nature. What is the moral difference between a beaver dam and a man-made dam? Both destroy other life in favor of their builders and change the ecosystem. Why is one damage and the other not? When the first photosynthetic organisms appeared, they released the first high concentration of free oxygen into the atmosphere. Oxygen was a toxin to all life that existed at the time, and may have resulted in one of the first mass extinctions. Was that environmental damage?