...and in general of most things that have been around longer, or are biologically simpler (a non-perfect hint being plain size). Huge organisms like humans bu

...and in general of most things that have been around longer, or are biologically simpler (a non-perfect hint being plain size). Huge organisms like humans built on the biological infrastructure available, and are thus to some degree dependent on what came before them. Having said that - people are now the evolutionary vehicle for memes, which are far faster to evolve than lowly genes. It's quite plausible people would not go extinct due to that adaptability even if global warming devastated the planet beyond the worst current projections and the vast majority of insects went extinct (at a realistic pace, not 'all invertebrates instantly'). But "not going extinct" is a far cry from "comfortably thriving". Aiming for survival seems like a bad idea to me. Who cares if we absolutely need (most) insects - we definitely want them.