Something I've always thought about with IoT is the fact that everything is hackable. There are very few things that the best hackers can't get to. With more and more things being automated (often times with more important info), there are more vulnerabilities that appear. I think a self-driving car is an example. The security on things like cars and anything in the home need to be extremely high to ensure the safety of the users. As the home becomes more and more smart, need to make sure it's not just a buffet for hackers.
Please enable and use application specific passwords. Then this mess would turn into "hackers can grab your gmail credential used only by your fridge, which you revoked quickly and without needing to change anything else".