On Venus you can be corroded, boiled, crushed or all three. True, on Mars you can die quite slowly. There is no bottom. The best we could ever hope for is to terraform Mars so it would be another Earth. A Space Odyssey was actually about.
Humans are the real mystery.
Maybe next time a bug-eyed monster would pop up. But just like real space, it never did. Columbus is only famous because there was a new world. True, he was a crank, but he got lucky. Then off we went, congratulating ourselves on having become as Gods.