Having an interest in technology does not mean you have to blind yourself to the pitfalls of technology. I love my cell phone, but I acknowledge that it was assembled through labor practices I would deem inhuman for laughable wages with unregulated toxic waste disposal. Technology is not a panacea.
Let's suppose 20-30% of Americans are employed as engineers, doctors, lawyers, CEO's. The non-trade jobs. What happens when we roboticize the other 70-80%'s jobs? Will ALL of them train to become robot repair techs? Doubtful. So where will they work? How will the economy keep moving? These are questions that NEED to be asked and answered instead of living in fantasy tech land.
I remember when the 'job creators' were busy creating jobs in China and shutting factories here. Every pundit was on and on about how we'd all be consultants and living in a service economy. Well now those people get mocked for not getting a STEM degree while they work in McDonald's or Wal-Mart next to all the other poors. Not everyone gets to live in Galt's Gulch buddy.