It's surprising how many people still think biology is somehow simpler than IT. This is very obviously not true. We're still just barely (not) capable of building or emulating the simplest biological systems.

Each time some species goes extinct, you lose all of the information, inventions, concepts pertaining to super-sophisticated nanotech that were encoded in their DNA. The better we understand the value of diverse life forms, the more we will curse the people who let even one species go extinct on their watch.