I am glad to finally see another post from you.  

>"...why should we care?"

The diversity of life is amazing, beautiful, and we are an integral part of it.  I have realized that all life is one immortal organism, and it's evolutionary complexity, while baffling and ineffable due to our incapacity to even grasp it's full panoply, is our actual nature. The first living thing passed on it's life force when it reproduced, and every subsequent generation has similarly arisen from the living components passed to it from it's forebears - an unbroken living chain of cells, seeds, and spores that we exist within and pass to our posterity in the same way.

Thanks!