It's interesting to contemplate the possibility of the extinction of my own specie. We may be able to survive the die-off and human mind may evolve. But for this thought experiment lets assume homo sapiens will become extinct, with some other species, some decades from now. What will be the value of that? Let's assume also that there's some system that is the whole of Earth, including the biosphere, climate, magnetism, light and other forces that are part of Earth, that in a way is an organism itself: Gaia.
This may also have some form of memory of all life, all organism that has evolved or gone extinct. And, AFAIK, there has being not one other species that contemplates about its own existence, and eventual death, to the extent that homo sapiens did (remember the die-off). And, then, the only worth of our species collapse will be for Gaia to NEVER make the same mistake again!
Now, this does not imply that our level of intelligence will never reappear in another specie. But, it will be done in a way that the evolution of intelligence is acompanied with the evolution of wisdom in this new specie. And many millions of years from now, maybe that specie will take the place that we could have got... to be the neural network of Earth itself.
Sure, there are a lot of big ifs... but it's fun to think about this out loud...
