Dutch Uncle
* Tertia Optio * Defend the Constitution
I assume complex multicellular organisms evolved because there are advantages to having sensory perception, exoskeletons, self-mobility, and speed.
The curious thing about complex multicellular animals is they exploded on the evolutionary scene in just about a period of 30 million years, after three billion years of nothing but one celled microbes occupying the planet
What advantages if the only purpose was to pass on genetic material? At least on Earth, some life evolved to higher and higher forms.
George Carlin had a funny bit one time about "Save the Planet". The planet will be fine. It's people who will be fucked. Life will go on until something happens that completely sterilizes the planet.