Not so. Reduction/stabilization of human population size is the only practical way out. What you propose would lead only to chaos & universal penury.
The cause of Overpopulation is Industrialization.....Overpopulation is a problem because of Industrialization.
The one and only cause of environmental destruction is Industrialization.
Overpopulation and Overconsumerism are consequences / by-products of Industrialization.
Without Industrialization there would be no overpopulation and no overconsumerism.
Industrialization, Overpopulation and Overconsumerism happen together.......Industrialization, Overpopulation and Overconsumerism happen at the same time.
It is Industrialization that has led to a population of 7 billion.....Not overbreeding.
The entire world was overbreeding before Industrialization.....The entire world is underbreeding after Industrialization.
There used to be 5 - 15 children per family all over the world before Industrialization and yet world population reached only 1 billion till 1800 AD......After Industrialization the family size reduced drastically, most families are now having 1 - 4 children and yet world population jumped from 1 billion to 7 billion in just about 200 years.
If Industrialization had not happened world population would be less than 2 billion today.
If Industrialization had not happened, High death rate would have kept population under control....Diseases caused by virus and bacteria would have kept population under control.....Feeding capacity of soil would have kept population under control....Shortage of food and water would have kept population under control.....Harsh Climatic Conditions would have kept population under control - People would not have been able to live in regions that are too hot or too cold.
If Industrialization had not happened this planet would have been in very good condition today.....There would be no overpopulation, no overconsumerism and only limited urbanization.
A Non-Industrial Society would have destroyed some ecosystems on the land [Forests] but Marine Ecology [Oceans] would have been almost 100% safe today......Forest Cover would be much greater than what it is now....Millions of species on the land and in the sea would not have been decimated and would be thriving with very healthy populations......This planet would be free of Billions of Tonnes of Metal Waste, Plastic Waste, Chemical waste, Gaseous Waste, eWaste and Nuclear Waste.....The Oceans wouldn't have become Acidic, Warmer and Oxygen Deprived because of Industrial Waste.
It is consumerism that destroys environment, Not population.
A Hunter_Gatherer Society of 7 billion would have destroyed very little environment...... because it would have destroyed environment only for food......not for thousands of consumer goods and services.
An Agrarian Society of 7 billion would have destroyed very little environment [compared to an Industrial Society of 7 billion]...... because it would have destroyed environment only for food, clothing and shelter.......not for thousands of consumer goods and services.
[By the way, A Hunter_Gatherer Society would have never reached a population of 7 billion......An Agrarian Society would have never reached a population of 7 billion]
Environment has been destroyed by Industrialization/ Consumerism…….Not by Population/ Overpopulation.
Total World Population has not increased ……It has decreased……In fact total world population has been decimated.
When we talk about population we should take into account population of all animal species on earth, not just human population.
Industrial Society has decimated millions of Animal Species……Increase in human population has coincided with decrease/ decimation of millions of animal species.... The total burden of population on this planet has not increased…..It has decreased.
Industrial Society has decimated millions of other species......There was a time when the combined population of other animal species was much greater than present human population.....and we don't even need to include smaller animals in this count.....The combined population of big animals alone whose size and weight was equivalent to or greater than man was much greater than current human population of 7 billion.
The amount of food this animal population was eating was much greater than the food consumed by humans today.......Yet millions of animal species did not destroy environment and lived sustainably on earth for millions of years......because they destroyed environment only for food and not for thousands of consumer goods and services.
If animals had started a consumerist "Industrial Society" millions of years ago they would have destroyed all ecosystems millions of years ago.
The entire world has been trying to control human population for 50 years and these efforts should / will continue in future.....so where is the problem with population?????
It is so ridiculous of Industrial Society to complain about overpopulation when it itself is the cause of overpopulation......It is so ridiculous of Industrial Society to make attempts to control population while promoting Consumerism, Growth Rate, Economy Rate and GDP exponentially.
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Industrial Society Destroys Mind and Environment
The going to church on Sundays might be a problem tho'.....me being an atheist 'n' all that 
