My first job out of high school was in a factory. Every aspect of production was automated by a machine with extremely high (five 9s) reliability. Despite that, things went wrong constantly because there was so much going on, usually in novel ways that couldn't be optimized away by tweaking or enhancing the machines. Something with human level dexterity and human level intelligence is necessary to fix the machines when things go wrong. On top of that, so many production tasks need that dexterity. I'd love to see a robot that can crochet. This is a good article about where we're at and where we need to be, but I do get frustrated with commenters who say "we don't need humanoids".