On the other hand, octopus live only long enough to mature and breed (2-3 years for most of them). Octopus aren't thinking deep thoughts with that fascinating nervous system. There will be no Octopi poems or symphonies. They're pretty much just trying to get laid before they die.
Our ancestors (at least going back a few million years or so) could hope to live a dozen or three years and fuck more than once. Octopus has a long way to go to catch up, evolution-wise.