Death of humanity as we know it

"The human race will eventually die, of civilisation..." - Ralf Waldo Emerson

There is a lot to say about this. So many issues to complain about, but let's be honest, it is very well said, very well summarized. And after all, civilization is our own creation.

The human race is without a doubt a 'best in class' in terms of natural selection. Why wait for nature to select the species that can adapt, survive or disappear when we can do the job ourselves? Let me elaborate: we are the ones that, on a drunken night, would drive the car off the cliff. Humans are causing their own end. And of course, by humans I mean all of our monstrous creations... that we call civilization. Wars, nuclear and chemical weapons, heavy high scale productions... what else is there to add?

Fukuyama said that Humanity reached the maximum state of civilization greatness and that this is the best of achievements (heaven on Earth basically) - what a funny thought. Years and an apology later, he made a correction: Nano technology and advanced Nano biology appeared. Humans are now transforming and we are entering a new era where borders between machinery and human beings are becoming extremely blurry. That means, for Fukuyama, that the human civilization will soon know a new golden age. This means, for the rest of us mortals, that we are approaching - with high speed - the day when we say goodbye to humanity as we know it. And there goes the auto-destruction (or auto-'natural'-selection) work. Luckily for Earth, nature will finally get rid of its cancer; unfortunately, it will be replaced by another unknown disease. Who is in?