At the core of all the problems facing the human species is its inability to examine and effectively deal with human reproduction. Reproduction is considered a human right, but dealing rationally with reproduction has not been treated effectively by most societies as a human responsibility.
The result is the ever-growing problem of overpopulation, which lies at the root of all the planetary problems of our age. Do you doubt this? If so, I would suggest that you are either ill informed or naive.
Industrialization, based in petroleum, has developed as a means to support population, as well as a means for the most aggressive and wily of our species to ensure their own progeny's survival and dominance . This petroleum based industrialization is the cause of global warming. It is the basis of corporate agriculture, which is stamping out biodiversity and producing food which can maintain an overpopulated planet at a huge cost in nutritional and cultural value. The processing of human waste in industrialized, urban population centers produces a sludge, which is used as fertilizer on millions of acres of land. The heavy metals in that sludge have already rendered thousands upon thousands of acres permanently useless for food production, due to the heavy metals from pipes and pollutants in it.
Educated people in industrialized countries look to the underdeveloped world and shake their heads at the lack of family planning there. Well motivated couples adopt children from those countries, as opposed to having children of their own. These people are perhaps the most rational and courageous planetary stewards in our times. However, corporate capitalism preaches the values of overpopulation, which is considered 'growth'. More cookie-cutter developments, more widgets for more factories to produce more useless junk to fill more landfills. Insanity.
An examination of the Chinese experience with The One-Child Policy illustrates the inability of human beings to address, understand and control their own reproduction for the common good of the species. And, even in a China which is now reaping the benefits of that policy, it is spoken of with condemnation by 'human rights' advocates in China and abroad. How about the human right to have enough space to grow food and enough clean air to breathe?
I hold the opinion that being a truly mindful and compassionate Humanist entails a commitment to fostering and practicing socially responsible reproduction of the human species. It is key. Wars, disease and famine have been the only modifiers of human population to date. With advances in medicine, a growing abhorrence of war, and a growing movement to feed the poor of the world, overpopulation will become a more and more obvious issue. Whether human beings will be able to chose quality of human existence for all people over their selfish choices, based on sexual and instinctual urges, may well determine the survival and continued evolution of our species.