[spynxic]

> ..but we're spending that time in increasingly sedentary hobbies/interests.

And work. Don't forget work.

> As a physician, does the idea that manufacturing and robotics will completely eliminate our need to work scare you at all?

Suppose a robot assistant could replace 60% ~ 80% of your time in the office as a physician. You would then have more leisure time to spend as you wish.