"The quickest way to halt population growth in its tracks is birth control. "
"The largest opposition to birth control is religious taboo."
I would say culture, of which religion is a part.
There needs to be a limit to population growth (until we colonize other planets), and this has been achieved in most industrialized nations with birth control.
As for ressources and life style, were are destroying the earth, stripmining and wasting away ressources like there's no tomorrow, not because theres no other alternatives, but all because thats the way human activity is currently organized, in great part as a result of the monetary system(profit, growth, cyclical/renewed consumption) and culture.
If we planted apple trees in blueberry fields along highways and had edible landscaping in public parks, there would be more fruits available but apple and blueberry farmers would moan because there would be much less profit to make and it would hurt jobs. The system is like drug pushing, its better to be counting on and profiting from a need never being meet and have a captive client base than providing a permanent solution. An electic car has very little maintenance (most of the friction causing, wear and tear, moving parts arent there to check, oil, repair, etc) thats good for the earth and for us customers, but in a monertary system its bad for business. If a scientist found that mixing and drinking blueberry juice and fish oil cured the cancer for good or something, the multi-billion cancer industry would probably buy him off or shoot him. And why prevent a problem in the first place when you can profit from fixing it? Our system is inherently corrupt, were so use to it that ist almost impossible to see.