Hmmm..... Do you have any evidence to prove that god want population explosion? The uncontrolled increase in human population has brought only sorrow and misery. Various civil wars going on in the Middle East, South Asia, and Sub-Saharan Africa can be directly attributed to the rapid increase in human population, and the resulting crunch in natural resources.
The closest I can come to proof is that God tells both Adam and Noah to be fruitful and multiply and fill the earth. There are lots of national parks, forests and wilderness lands in America that are not filled with living people. Disobedient America.
If the humans fill the earth, then what will happen to the other living beings? "Be fruitful and multiply" works when you are a member of a tribe, which numbers no more than 300 or 400 individuals. Additional population can offer protection from the rivals. But in case you are living in India, where 1.3 billion people are squeezed into 3 million sq. km, that will be a very bad idea.