Is the human race really needed for Earth to survive?
Short answer: Earth and other species can survive much better withOUT human beings.
Long answer: Although I don't expect every earthling to adopt vegetarianism.
But what I would certainly expect is... people who are vegetarian by choice should certainly see and corelate with what I am trying to state below.
Earth has enough species which effectively and fruitfully contribute to its overall ecosystem.
And Earth can very much sustain itself much better withOUT human species... Period!
Humans have self certified themselves with know-it-all attitude that they as a species are important than others.
They have plundered each species in the ecosystem of food chain BUT they themselves have built concrete jungles and are NOT ready to be killed or eaten by other species.
The alarm levels have risen to such an extent that in the last 50 years, NATURE is reinventing itself by creating deadly viruses like AIDS and lifestyle disorders which seek human death or scream for self correction in human behavior.
Nature is compelled to do all of this, to bring in the much needed balance to the ever increasing human population which merely plunders and consumes anything & everything without giving back to nature.
No, and no.
The earth got by for a very long time without humans and would get by just fine without us. However, that said, we are not a big curse for the earth; we're a minor curse. Compared to things like cyanobacteria, which wiped out nearly every other living thing on the planet during the Oxygen Catastrophe, we're barely making a ripple.
There is no predetermined fate for Earth, no "plan" that Humans can at our current technological capacity derail - outside of course the inevitable death of our solar system when our Sun dies.
Yes, humans are antagonizing and dominating pretty much all ecosystems in the surface of Earth, but this is detrimental for certain species and perhaps fragile ecosystems. Earth doesn't really care, will be doing its own thing as it spins and plows through space at incredible speeds.
Even in the worst cases of climate change we could gradually inflict upon our Planet, even if we help it turn into a chocking hot gas hell like Venus or a frozen dry wasteland like Mars, it is our well-being and comfort we put at risk. Earth allowed life to thrive and perish on its crust for billions of years, won't make a special case for us, just like it didn't for giant reptiles.
Our "love" and "care" for Earth is just because we love to think of the Planet as a giant extension of our Ego. It thinks nothing about us, much like we don't think about the bacteria that make up the 90+% of the cells on our body...only our life desperately needs all of these bacteria, while Earth doesn't need humans and perhaps life on it the least.
Earth will survive about 5 billion years, with or without us. We have no effect at all on this.
If you mean life, rather than earth, well it survived fine for billions of years before we came and without us would probably survive a billion years or so more, after that it will get too hot here. Humans have made some changes to ecosystems, though nothing compared to the big changes of the past. As always when things change some species go extinct while others proliferate. In this respect we are neither a blessing or a curse for life, just another change.
Humans, however, have a decent shot at preserving life past the time when earth will get too hot, by spreading life along with ourselves into space, and that I consider a good thing.
No. The earth is doing fine. 10 or 20 million years from now there will probably be no trace of humanity left at all. With the action of plate tectonics, all the waste and noise will all eventually get 'recycled' along with the land masses.
Likely things will get very awkward for a large percentage of the life forms on this planet in the next 100 to 200 years, there may be a huge die off. But as long as we don't sterilize this rock, evolution will "keep on keeping on" an new life forms will emerge.
The earth and humans have a symbiotic relationship. Certainly, there is other life here and we are the denizens of this garden. The garden is not denizens of us. But the fact that we depend on her to exist should make her more important than our post-modern dreams. That's the curse, our arrogance and refusal to make beauty, virtue and goodness our chief concerns, instead of this blind 'progress' everyones on about.