Why do I frequent on-line FreeCycle groups and never throw it in the garbage

For me it's not just the philosophy of 'waste not want not', or that what I throw out may be something someone wants and/or needs. Do I presume that I should throw away something that has use to another, that, along with the billions of other people sharing the earth and doing the same thing, are drowning in the pollution that our own naivety creates around us. The life of the people, the plants, the animals, all hangs in the balance based on the little things each of us does today.
Our air, our food, and our very lives dependent on an ecosystem, which is assaulted by the byproducts of human life, sending it to a tipping point that may or may not be in our lifetimes to decimate intelligent life on earth? We blindly throw away that empty can or newspaper, not thinking about how many people also blindly throw away their own. How can I justify adding more unnecessary fuel to the incinerator that burns it all up? We even get to breath the results of what we throw away! Then when it rains, we get to eat the residue that falls onto the leaves of our vegetables. The roots are drinking up the residue from the soil, the cows are eating the grass that grows, and we are drinking the milk and eating the potatoes. We don’t think of how lucky we really are that we have so much to eat and drink. This is truly the land of plenty of good food. How good is that food? If it’s not that good, does what we throw away have an effect on it? If you go to the web for your information rather than the television, and research the safety of your food, there is also plenty of information available. Many scientific journals, many researchers, many without a corporation funding them and many without conflicts of interest. There were some studies that the Greenhouse Effect was not real, but if you searched the funding for those studies you found Exxon was the main source of capital. An intelligent perusal like this of what is on the web will net you awareness that the food we eat today is not as safe as we think. The water we drink, even bottled water, has problems. Especially the trihalomethanes problem. Environmental Working Group recently reported on bottled water being filled with poisons like these, estrogens, even painkillers in some bottled waters!
Everything on earth is being recycled. Some of it into the food and water supply. If you’re throwing it away, think carefully about the final result of what you’re doing. Is it worth anything to anybody else? If we all do our part, we can cut down on what gets into our bodies and causes us untold illness, diseases, cancers and early death. The life we save may be our own, our children’s, our children’s children.