So total worst case scenario, we off all humans and animals in our race to outdo ourselves. Do you think plants will survive?

I think, personally that they will – albeit maybe only on a microscopic level to begin with. Plants have been on the Earth for somewhere around 430 – 475 million years compared to animal life, which is estimated to have been around for between 300 and 400 million years. (Sadly no comb jelly fossils to give us a better estimate… reptiles however existed 300 million years ago.) So even at the shortest, plants have been around 30 million years longer than other life, and in the CO2 rich environment we would likely leave behind, I think that plants would again hold sway over the Earth for a few million years before animal organisms started sprouting again. What are your thoughts about this scenario?