Lets continue this thought:
Mamals are the definition of parasite, heck as a baby they are a parasite inside a parasite.
Humans are parasites as we are mammals, were just smart enough to know so we try to extend our hosts lifetime while using it.
Almost any living being is a parasite, so very little contribute to the actual wellbeing of the earth and all of those that do contribute do so as a means of survival.
Heck isnt plantlife a parasite ? just lying around all day using up Water to grow just to sustain bigger parasites ?
Our Solar system ? clearly a parasite, we contribute nothing to the universes wellbeing and just mooched off the cosmic energy when it was born.
Heck the poor nothing that was before anything now has all these loud obnoxious stuff in it, clearly the universe just used it as a storage space.
So really, existence is parasitic : deal with it.
Human's are the plague of the universe and im damn proud to be a part of it.
MAYBE YOU SHOULD WATCH MORE DOCTOR WHO !