Humanity is a collection of people the primary characteristics of which are: narcissism, as people are very self centered and rarely willing to give any acclaim to any other species whatsoever. A second characteristic is poor selection of leadership, where most animals select leaders based on merit humans tend towards inheritance of titles. A tertiary characteristic is violence, while animals are often thought of as more violent or creativity lends well to destruction, such as the invention of nuclear weapons and the creation of armies of millions. A fourth characteristic of humanity is misconceived uniqueness, thinking that they are the only species on the earth with complex social hierarchies, with traditions and with culture of any sort. There are many more possible characteristics but these are a few of the more important.

The humanities were invented because the intelligent people of the Renaissance period grew tired of listening to stupid people. As a result, they came up with the idea to make the humanities legitimate "studies" in which people, in the most verbose possible way, list obvious, surface-level, truths of the universe and relay them back to one another as if they were sharing knowledge. All of the stupid people have been occupied since.

A retarded species that will make all life on Earth extinct

Humanity: Yes, a big word! Humanity contains all, i suspect, living human beings that inhibit and "protect" the world and it's neighbouring stones, rocks and other elements, as well.

We "the people" have been naming them "planets" for some time now.

In this context "we the people" i do mean all people, if you have a thing for horses, animals, things or places, than this doesn't make you a rock or a horse or even a piece of soap, it is still, i know unbelievable, but it doesn't make you something other than human. You may like horses, you may like soap, but rest asured you shall never be soap!
So yes, if it was something you have done, you might try to blame the tree in a poetic manner or seek to stone a piece of soap but that's all there is to it.

An outdated term first coined in the 13th Century which describes an ideological yet ludicrous sense of global and ethical coexistence amongst Human-Beings.

noun
1. an expression or emphasis placed on the man in humanity to convey the need to allow men who feel overlooked, invisible, or even forgotten to have a voice in today's society