(The page set this is from is called ihemt–Involuntary Human Extinction Movement.)
Q: Why are humans so bad?
One of the biggest flaw of humans is to try to explain things in which they don't understand, which has been the basis of the institution of religion. Religion was created to explain things which they could not understand, however, now they can. Our race no longer needs it. Religion is one of the biggest institutions that are causing more harm than good to the human population. There is no god, there is only science. Humans are the ones that have the ability to create and destroy human life. Humans have strayed too far from humanity itself, worshipping objects and people that do not exist.
Humans have caused much harm to the environment; so much, in fact, that the world will soon already be at it's end. Much of the world's population is already dying due to external causes. War, contagious diseases,and overpopulation. All of these lead to environmental degradation, poor nutrition and pollution. If a solution is not found quickly, these problems caused by the human race will cause humanity's end.
Q: Can't humanity be saved?
Almost all of today's problems are caused by solutions to the problems of yesterday. Once a solution to a problem is created, that solution causes a new problem. Each and every problem that we have currently will just cause a new problem if we try to find a solution. That is why humans are beyond being able to be completly saved. Once humanity would be close to being saved, it will go and do something bad again, ruining everything they tried to achieve. Humans are beyond help, and if it were to continue, it would only get worse.
Q: Aren't humans the most important species on earth?
Humans certainly the most power over the world, however that may be for the worse. Humans have the most power to help improve society, however we also have the most power to destroy the world. That's why the world is degrading away. Flawed humans are going to keep degrading the earth until there is nothing left. Without humans, the world will be able to go on. No pollution. No artificial destruction. Nobody to destroy the earth.
Q: Isn't this genocide?
Many people could probably consider this genocide, as it would destroy the entire population of the world. People could see what I am doing as similar to what Hitler was doing, when he decied to wipe out the Jews. Hitler was consumed by hate, and did not actually have a good reason for doing what he did. Myself, on the other hand, are doing this for the good of the human race. So yes, this could be considered genocide, however it is for the good of the human race.
Q: Why extinction? Can't we just get rid of the people that are doing the harm?
I, too, would favor just getting rid of the people causing problems. However, once all these people are gone, more would just come back and take take their place. Many of the problems that we face in the current world are due to human nature. Humanity will keep making the same mistakes time and time again. Once humanity stops doing something, it will only be a matter of time before they start doing it again. That is why the only way to truely get rid of the problem is to destroy them all.